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  1. 15
      NetGuard/.gitignore
  2. 105
      NetGuard/ADBLOCKING.md
  3. 500
      NetGuard/FAQ-de.txt
  4. 751
      NetGuard/FAQ.md
  5. 1
      NetGuard/FUNDING.yml
  6. 675
      NetGuard/LICENSE
  7. 411
      NetGuard/README.md
  8. 42
      NetGuard/build.gradle
  9. 24
      NetGuard/gradle.properties
  10. 164
      NetGuard/gradlew
  11. 90
      NetGuard/gradlew.bat
  12. 8
      NetGuard/local.properties
  13. 1
      NetGuard/settings.gradle

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NetGuard/.gitignore
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*.iml
.gradle
/local.properties
/.idea
/.idea/workspace.xml
/.idea/libraries
.DS_Store
/build
/captures
/tools/config.sh
/app/.externalNativeBuild
/app/release
/app/play
keystore.properties
crowdin.properties

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Ad Blocking with NetGuard
-------------------------
Instructions (you need to follow **all** the steps):
1. Download/install the latest NetGuard version [from GitHub](https://github.com/M66B/NetGuard/releases) (ad blocking is not possible with the Play store version because Google does not allow ad blocking apps in the Play store)
1. Enable the setting *'Filter traffic'* in the advanced options (three dot menu > Settings > Advanced options > Filter traffic; default is disabled except always enabled in Android 5.0 and earlier)
1. Enable the setting *'Block domain names'* in the advanced options (three dot menu > Settings > Advanced options > Block domain names; default is enabled)
1. Import or download [a hosts file](https://en.wikipedia.org/wiki/Hosts_(file)) using the NetGuard backup settings (three dot menu > Settings > Backup > Download hosts file)
1. Disable browser compression (in Chrome: three dot menu > Settings > Lite mode > Off)
1. Wait at least 10 minutes to let the Android DNS cache time out (clear via Chrome: [chrome://net-internals/#dns](chrome://net-internals/#dns))
1. Test to see if ad blocking works by opening [this page](http://www.netguard.me/test)
1. Enjoy ad blocking, but don't forget to support application developers and website authors in other ways
<br />
Troubleshooting:
Because of routing bugs, some devices/Android versions require:
* the advanced option *Manage system applications* to be enabled and/or
* the network option *Subnet routing* to be disabled and/or
* two (not just one) DNS server addresses to be set in the advanced options, for example 8.8.8.8 and 8.8.4.4 or more privacy friendly [these](https://dns.watch/)
* disabling of private DNS
<br />
Note that:
* applications, like web browsers, may cache data, so you may need to clear caches
* applications, browsers mostly, that have a *"data saver"*-like feature that proxies requests through their servers (eg. Opera w/ Turbo, Opera Max, Puffin, Chrome w/ data saver, UC Browser, Yandex w/ Turbo, Apus Browser, KK Browser, Onavo Extend, Maxthon) will not have ads blocked as NetGuard cannot see those domain requests
* applications, browsers mostly, can have a private DNS feature (Chrome: three-dots menu, Settings, Privacy, Use secure DNS, turn off) **
* applications, including browser, can be system apps, which require managing system apps in the advanced settings to be enabled
* the Android always-on VPN setting *Block connections without VPN* will result in stop sending domain names to the VPN after some time
* YouTube ads are not domain-based, and thus cannot be blocked with NetGuard
* NetGuard ignores the IP addresses in the hosts file, because it does not route blocked domains to localhost
* When NetGuard imports the hosts file, it automatically discards any duplicates entries, so duplicate entries are not a problem and have no performance impact after the file is imported
* you can check the number of hosts (domains) imported by pulling the NetGuard notification down using two fingers if your version of Android supports that functionality
* wildcards are not supported due to performance and battery usage reasons
* it is not possible to edit the hosts file (change/add/delete domain names) with NetGuard
* you can disable ad blocking by disabling the setting *'Block domain names'* in the advanced options
* you cannot exclude a single app from ad blocking because Android resolves domain names on behalf of all apps
* **ad blocking is provided as-is**, see also [here](https://forum.xda-developers.com/showpost.php?p=71805655&postcount=4668)
* **ad blocking is not available when NetGuard was installed from the Google Play store!** (disable automatic updates of NetGuard in the Play store application)
** Some browsers (and also apps) now use DNS over TLS (DoT) or DNS over
HTTPS (DoH). If one of the two protocols is active in the browser,
NetGuard cannot "see" the outgoing DNS requests (due to encryption).
They still flow through NetGuard, but are not treated as DNS requests,
but as normal connections (via port 853 or 443). It is therefore not
sufficient to disable Private DNS within Android, but you must also
check the settings for DoT and DoH (especially for browsers).
<br />
The NetGuard version from GitHub:
* is signed with the same signature as the version from the Google Play store, so any purchases will be restored (this will not happen with for example the F-Droid version)
* will automatically notify you if there are updates available via GitHub (this can be switched off in NetGuard's settings)
<br />
Which hosts (ad servers) will be blocked depends on the hosts file being used.
NetGuard downloads the [StevenBlack hosts file](https://github.com/StevenBlack/hosts) by default.
<br />
Automation:
You can automatically download a hosts file by sending this service intent with your favorite automation tool, like Tasker:
`eu.faircode.netguard.DOWNLOAD_HOSTS_FILE`
For example using [adb](https://developer.android.com/studio/command-line/adb.html) from the command line:
`adb shell am startservice -a eu.faircode.netguard.DOWNLOAD_HOSTS_FILE`
<br />
Apart from using a hosts file, you can block most in-app ads by blocking this address in the access list of Google Play services:
*googleads.g.doubleclick.net/443*
You'll need to enable filtering and (temporarily) logging for this (you can do this by using the *Configure* button; check both options)
and you'll need to wait until the address appears (you can speed this up by opening some apps with in-app ads).
Note that ads are likely being cached, so this may not take effect immediately.
<br />
An alternate way to block advertisements is by using special DNS servers, like these:
* [AdGuard DNS](https://adguard.com/en/adguard-dns/overview.html) - Free
* [Alternate DNS](https://alternate-dns.com/) - 14 day free trial
* [NoAd](https://noad.zone/) - Not working as of 2017 June 03
Be sure to read the privacy policies of these services as they might log your DNS requests.
You can set DNS server addresses for all connection types in NetGuard's *Advanced options*.
Note that when you set two DNS server addresses, the default (operating system/network provider) DNS servers will not be used anymore.
Feel free to let me know about other servers or request to add them in alphabetic order by doing a pull request.
<br />
**Please do not mention this feature in Google Play store comments, since Google does not allow ad blocking applications in the Google Play store.**

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Häufig gestellte Fragen (FAQ)
(0) Wie verwende ich NetGuard?
Aktivieren Sie die NetGuard-Firewall über den Schalter in der Aktionsleiste von NetGuard
Erlauben (grünlich*) oder verweigern (rötlich*) Sie den Wi-Fi- oder mobilen Internetzugang über die Symbole neben den Anwendungsnamen in der Anwendungsliste des NetGuard
Über Einstellungen > Standardeinstellungen können Sie vom Modus "Blockieren/Blacklist" (Deaktivieren von "Wi-Fi blockieren" und "Mobile blockieren" und anschließendes Blockieren unerwünschter Anwendungen in der Anwendungsliste des NetGuard) in den Modus "Zulassen/Whitelist" (Aktivieren von "Wi-Fi blockieren" und "Mobile blockieren" und anschließendes Zulassen gewünschter Anwendungen in der Anwendungsliste des NetGuard) wechseln.
* Je nach dem von Ihnen verwendeten Thema können die Symbole wie folgt aussehen:
Erlaubt (Internetzugang erlaubt): grünlich (teal) / blau / lila / grau
Blockiert (Internetzugang verweigert): rötlich (lachsfarben) / orange / gelb / gelb
(1) Kann NetGuard meine Privatsphäre vollständig schützen?
Nein - nichts kann Ihre Privatsphäre vollständig schützen. NetGuard tut sein Bestes, ist aber durch die Tatsache eingeschränkt, dass es den Android-VPN-Dienst verwenden muss. Dies ist der Kompromiss, der erforderlich ist, um eine Firewall zu entwickeln, die keinen Root-Zugriff erfordert. Die Firewall kann nur gestartet werden, wenn Android den Start "erlaubt". Sie bietet also keinen Schutz beim frühen Hochfahren (obwohl Sie Ihr Netzwerk vor dem Neustart deaktivieren können). Außerdem muss der Android-VPN-Dienst neu gestartet werden, um neue Regeln anzuwenden, wenn sich die Konnektivität geändert hat oder wenn der Bildschirm ein- oder ausgeschaltet wird. Das ist jedoch viel besser als gar nichts.
In den erweiterten Optionen können Sie Seamless VPN Handover on reload aktivieren, um zu verhindern, dass Datenverkehr verloren geht, wenn der Android VPN-Dienst neu gestartet wird. Dies funktioniert jedoch nicht bei allen Android-Versionen/Varianten und führt dazu, dass NetGuard hängen bleibt und alle Verbindungen blockiert.
Unter Android N und höher kann NetGuard als Always-On VPN konfiguriert werden. Aktivieren Sie unter Android O nicht die Unteroption "Verbindungen ohne VPN blockieren", siehe Frage 51) für weitere Informationen dazu.
Um sich besser zu schützen, denken Sie daran, Wi-Fi und mobile Daten vor dem Neustart zu deaktivieren und sie erst beim Neustart zu aktivieren, nachdem der Firewall-Dienst gestartet wurde (und das Schlüsselsymbol in der Statusleiste sichtbar ist).
Vielen Dank @pulser
(2) Kann ich eine andere VPN-Anwendung verwenden, während ich NetGuard nutze?
Wenn die VPN-Anwendung den VPN-Dienst nutzt, dann nicht, denn NetGuard muss diesen Dienst nutzen. Android erlaubt immer nur einer Anwendung, diesen Dienst zu nutzen.
NetGuard ist eine Firewall-Anwendung, es ist also nicht beabsichtigt, VPN-Unterstützung hinzuzufügen. NetGuard unterstützt jedoch einen SOCKS5-Proxy zur Verkettung von VPN-Anwendungen. Eine mögliche Lösung, die von der Community beigesteuert wurde, finden Sie hier.
3) Kann ich NetGuard auf jeder Android-Version verwenden?
Nein, die minimal erforderliche Android-Version ist 5.1 (Lollipop).
(4) Verbraucht NetGuard zusätzliche Akkuleistung?
In der Standardeinstellung verbraucht NetGuard kaum Akkuleistung. Alle Einstellungen, die zusätzlichen Akkuverbrauch verursachen, wie IP-Filterung und Protokollierung, sind mit einer Warnung versehen. Wenn NetGuard sehr viel Strom verbraucht, überprüfen Sie bitte Ihre Einstellungen.
Der Akkuverbrauch bei aktivierter IP-Filterung hängt von der Qualität der Implementierung Ihres Android-VPN-Dienstes und der Leistungsfähigkeit des Prozessors Ihres Geräts ab. Im Allgemeinen kann der Akkuverbrauch auf älteren Geräten inakzeptabel sein, während er auf modernen Geräten mit einem effizienten Prozessor kaum auffällt.
Die Benachrichtigung über die Netzwerkgeschwindigkeitsgrafik verbraucht zusätzliche Akkuleistung. Deshalb wird die Benachrichtigung nur angezeigt, wenn der Bildschirm eingeschaltet ist. Sie können die Aktualisierungshäufigkeit in den Einstellungen verringern, um den Akkuverbrauch zu reduzieren.
Beachten Sie, dass Android oft fälschlicherweise den Akkuverbrauch anderer Anwendungen dem NetGuard zuordnet, da der Netzwerkverkehr anderer Anwendungen durch den NetGuard fließt. Das bedeutet, dass es so aussehen kann, als würde NetGuard viel Akkuleistung verbrauchen, aber in Wirklichkeit ist der Gesamtakkuverbrauch aller Apps immer noch derselbe.
(6) Sendet NetGuard meinen Internetverkehr an einen externen (VPN-)Server?
Nein, je nach Betriebsmodus geschieht grundsätzlich eines von zwei Dingen mit Ihrem Internetverkehr:
Wenn die IP-Filterung deaktiviert ist, wird der blockierte Internetverkehr an den lokalen VPN-Dienst weitergeleitet, der dann als Sinkhole fungiert (d.h. den gesamten blockierten Verkehr verwirft).
Wenn die IP-Filterung aktiviert ist, wird sowohl der blockierte als auch der erlaubte Internetverkehr in den lokalen VPN-Dienst geleitet und nur der erlaubte Verkehr wird an das vorgesehene Ziel weitergeleitet (und nicht an einen VPN-Server).
Der Android-VPN-Dienst wird verwendet, um den gesamten Internetverkehr lokal zu NetGuard zu leiten, so dass für die Erstellung dieser Firewall-Anwendung kein Root-Recht erforderlich ist. NetGuard ist im Gegensatz zu allen anderen No-Root-Firewall-Anwendungen zu 100 % Open Source, so dass Sie im Zweifelsfall den Quellcode selbst überprüfen können.
(7) Warum werden Anwendungen ohne Internetzulassung angezeigt?
Die Internetzugangsberechtigung kann bei jedem Anwendungsupdate ohne Zustimmung des Benutzers erteilt werden. Indem NetGuard alle Anwendungen anzeigt, können Sie den Internetzugang kontrollieren, noch bevor ein solches Update erfolgt.
(8) Was muss ich aktivieren, damit die Google Play™ Store-App funktioniert?
Sie müssen 3 Pakete (Anwendungen) aktivieren (verwenden Sie die Suche in NetGuard, um sie schnell zu finden):
com.android.vending (Play Store)
com.google.android.gms (Play-Dienste)
com.android.providers.downloads (Download-Manager)
Da die Google Play™ Store-App dazu neigt, von sich aus nach Updates zu suchen oder sie sogar herunterzuladen (auch wenn kein Konto damit verknüpft ist), kann man sie in Schach halten, indem man "Bei eingeschaltetem Bildschirm zulassen" für alle 3 Pakete aktiviert. Klicken Sie auf den Pfeil nach unten auf der linken Seite eines Anwendungsnamens und aktivieren Sie diese Option, aber lassen Sie die Netzwerksymbole auf rot stehen (daher blockiert). Das kleine menschliche Symbol wird für diese Pakete angezeigt.
Beachten Sie, dass NetGuard die Installation eines Google-Dienstes nicht erfordert.
(9) Warum wird der VPN-Dienst neu gestartet?
Der VPN-Dienst wird neu gestartet, wenn Sie den Bildschirm ein- oder ausschalten und wenn sich die Konnektivität ändert (Wi-Fi, Mobilfunk), um die Regeln mit den Bedingungen "Zulassen, wenn der Bildschirm eingeschaltet ist" und "Blockieren, wenn Roaming" anzuwenden.
Siehe hier für weitere Details.
(10) Werden Sie ein Tasker-Plug-in anbieten?
Nein, denn wenn es Tasker erlaubt ist, den NetGuard zu deaktivieren, kann jede Anwendung den NetGuard deaktivieren. Es ist keine gute Idee, einer Sicherheitsanwendung zu erlauben, von anderen Anwendungen deaktiviert zu werden.
(13) Wie kann ich den laufenden NetGuard-Eintrag auf dem Benachrichtigungsbildschirm entfernen?
Klicken Sie lange auf die NetGuard-Benachrichtigung
Tippen Sie auf das "i"-Symbol
Je nach den Software-Anpassungen Ihres Geräts und/oder ROM-Herstellers werden Sie entweder zu
zum Bildschirm "App-Info", wo Sie das Häkchen bei "Benachrichtigungen anzeigen" entfernen und dem nächsten Dialog zustimmen können
zum Bildschirm "App-Benachrichtigungen", wo Sie den Schieberegler "Blockieren" auf "Ein" stellen können
Beachten Sie, dass unabhängig davon, ob Sie eine Dialogwarnung erhalten oder nicht, dieser Vorgang auch alle Informations- oder Warnbenachrichtigungen von NetGuard deaktiviert, wie z. B. die Benachrichtigung über eine neu installierte Anwendung.
Um zu erfahren, warum diese Benachrichtigung überhaupt notwendig ist, lesen Sie bitte Frage 24.
Einige Android-Versionen zeigen eine zusätzliche Benachrichtigung an, die ein Schlüsselsymbol enthalten kann. Diese Benachrichtigung kann leider nicht entfernt werden.
(14) Warum kann ich nicht OK wählen, um die VPN-Verbindungsanfrage zu bestätigen?
Möglicherweise befindet sich eine weitere (unsichtbare) Anwendung über dem Dialog für die VPN-Verbindungsanfrage. Einige bekannte (den Bildschirm verdunkelnde) Anwendungen, die dies verursachen können, sind Lux Brightness, Night Mode und Twilight. Um dieses Problem zumindest vorübergehend zu vermeiden, schließen Sie alle Anwendungen und/oder Dienste, die im Hintergrund ausgeführt werden können.
(15) Werden F-Droid-Builds unterstützt?
F-Droid-Builds werden nicht unterstützt, da ich keine Kontrolle darüber habe, ob und wann die F-Droid-Version von NetGuard aktualisiert wird, so dass ich keine rechtzeitigen Updates garantieren kann, z. B. wenn es ein kritisches oder Sicherheitsproblem gibt.
Da F-Droid-Builds und GitHub-Versionen unterschiedlich signiert sind, muss ein F-Droid-Build zuerst deinstalliert werden, um auf eine GitHub-Version aktualisieren zu können.
(16) Warum werden einige Anwendungen abgeblendet angezeigt?
Deaktivierte Anwendungen und Anwendungen ohne Internetzugang werden abgeblendet dargestellt.
(17) Warum verbraucht der NetGuard so viel Speicher?
Das tut er nicht. NetGuard weist keinen Speicher zu, außer ein wenig für die Anzeige der Elemente der Benutzeroberfläche und für die Pufferung des Datenverkehrs. Bei einigen Android-Varianten scheint die Verbindung mit der Google Play™ Store-App fast 150 MB zu verbrauchen. Sie wird für In-App-Spenden benötigt und wird fälschlicherweise NetGuard statt der Google Play™ Store-App zugewiesen.
(18) Warum kann ich NetGuard nicht in der Google Play™-Store-App finden?
NetGuard erfordert mindestens Android 5.1 und ist daher in der Google Play™ Store-App auf Geräten mit früheren Android-Versionen nicht verfügbar.
(18) Warum kann ich NetGuard nicht in der Google Play™ Store-App finden?
NetGuard erfordert mindestens Android 5.1 und ist daher in der Google Play™ Store-App auf Geräten mit früheren Android-Versionen nicht verfügbar.
(19) Warum hat die Anwendung XYZ immer noch Internetzugang?
Wenn Sie den Internetzugang für eine Anwendung sperren, gibt es keine Möglichkeit, dies zu umgehen. Anwendungen können jedoch über andere (System-)Anwendungen/Komponenten auf das Internet zugreifen. So erhalten beispielsweise die Google Play-Dienste eingehende Push-Nachrichten und Werbung für die meisten Anwendungen, einschließlich WhatsApp und Facebook Messenger. Sie können dies verhindern, indem Sie den Internetzugang auch für die andere Anwendung/Komponente blockieren. Sie können Systemanwendungen und -komponenten wie Google Play Services blockieren, indem Sie die erweiterte NetGuard-Option Systemanwendungen verwalten aktivieren. Dies lässt sich am besten diagnostizieren, indem Sie das globale Zugriffsprotokoll überprüfen (Drei-Punkte-Menü, Protokoll anzeigen).
Beachten Sie, dass einige Anwendungen immer wieder versuchen, auf das Internet zuzugreifen, was durch das Senden eines Verbindungsanforderungspakets geschieht. Dieses Paket geht in das VPN-Sinkhole, wenn der Internetzugang für die Anwendung blockiert ist. Dieses Paket besteht aus weniger als 100 Bytes und wird von Android als ausgehender Datenverkehr gezählt und ist auch in der Geschwindigkeitsanzeige sichtbar.
(20) Kann ich den NetGuard "grün" machen/bewerben?
Nein. Wenn Sie den NetGuard auf "grün" stellen oder anderweitig in den Ruhezustand versetzen, werden die Regeln nicht angewendet, wenn sich die Konnektivität von Wi-Fi/Mobilfunk, Bildschirm ein/aus und Roaming/nicht Roaming ändert.
(21) Wirkt sich der Dämmerungsmodus auf den NetGuard aus?
Ich bin mir nicht sicher, denn aus der Dokumentation zum Dämmerungsmodus geht nicht hervor, ob der Android-VPN-Dienst davon betroffen ist.
Um sicher zu gehen, können Sie die Akku-Optimierung für NetGuard wie folgt manuell deaktivieren:
Android-Einstellungen > Akku > Drei-Punkte-Menü > Akku-Optimierungen > Dropdown > Alle Apps > NetGuard > Nicht optimieren > Fertig
Die Vorgehensweise kann von Gerät zu Gerät unterschiedlich sein.
Das Deaktivieren des Standby-Modus für NetGuard kann nicht von NetGuard aus erfolgen, da NetGuard laut Google kein Anwendungstyp ist, der dies tun darf.
(22) Kann ich mit dem NetGuard Tethering (Android-Hotspot) oder Wi-Fi-Anrufe nutzen?
Ja, aber Sie müssen das Subnetz-Routing und Tethering in den NetGuard-Netzwerkeinstellungen aktivieren. Ob dies funktioniert, hängt von Ihrer Android-Version ab, da einige Android-Versionen einen Fehler aufweisen, der die Zusammenarbeit zwischen Tethering und dem VPN-Dienst verhindert.
Einige Geräte schalten das Wi-Fi in den Ruhezustand, so dass Tethering nicht funktioniert, wenn der Bildschirm ausgeschaltet ist. Dieses Verhalten kann in den erweiterten Wi-Fi-Einstellungen von Android deaktiviert werden.
(24) Kann man die Benachrichtigung aus der Statusleiste entfernen?
Android kann Hintergrunddienste jederzeit beenden. Dies kann nur verhindert werden, indem ein Hintergrunddienst in einen Vordergrunddienst umgewandelt wird. Android verlangt eine ständige Benachrichtigung für alle Vordergrunddienste, um Sie auf einen möglichen Batterieverbrauch aufmerksam zu machen (siehe Frage 4). Die Benachrichtigung kann also nicht entfernt werden, ohne Instabilität zu verursachen. Allerdings wird die Benachrichtigung als niedrige Priorität markiert, was dazu führen sollte, dass sie an das Ende der Liste verschoben wird.
Das Schlüsselsymbol und/oder die Benachrichtigung "VPN läuft", die von Android und nicht von NetGuard angezeigt wird, kann leider nicht entfernt werden. In der Google-Dokumentation steht: "Eine vom System verwaltete Benachrichtigung wird während der Lebensdauer einer VPN-Verbindung angezeigt".
Android 8 Oreo und höher zeigen eine Benachrichtigung "... läuft im Hintergrund" an, die alle im Hintergrund laufenden Apps auflistet. Sie können diese Benachrichtigung nicht deaktivieren, aber Sie können das Symbol wie folgt aus der Statusleiste entfernen:
Öffnen Sie Einstellungen > Apps & Benachrichtigungen > App-Info
Öffnen Sie die Einstellungen (drei Punkte); Wählen Sie "System anzeigen".
Wählen Sie "Android-System".
Wählen Sie "App-Benachrichtigungen".
Wählen Sie "Im Hintergrund laufende Apps".
Wählen Sie "Wichtigkeit" und wählen Sie "Niedrig".
(25) Können Sie eine Funktion "Alle auswählen" hinzufügen?
Die Funktion "Alle auswählen" ist nicht erforderlich, da Sie in den Einstellungen von Netguard vom Modus "Blockieren" (Blacklist) auf "Zulassen" (Whitelist) umschalten können. Siehe auch Frage 0.
(27) Wie lese ich das Protokoll des blockierten Datenverkehrs?
Die Spalten haben die folgenden Bedeutungen:
Zeit (tippen Sie auf einen Protokolleintrag, um das Datum zu sehen)
Anwendungssymbol (tippen Sie auf einen Protokolleintrag, um den Anwendungsnamen zu sehen)
UID der Anwendung
Wi-Fi / mobile Verbindung, grün=erlaubt, rot=geblockt
Interaktiver Status (Bildschirm an oder aus)
Protokoll (siehe unten) und Paketflags (siehe unten)
Quell- und Zielport (tippen Sie auf einen Protokolleintrag, um einen Zielport zu suchen)
Quell- und Ziel-IPv4- oder IPv6-Adresse (tippen Sie auf einen Protokolleintrag, um eine Ziel-IP-Adresse nachzuschlagen)
Name der Organisation, der die IP-Adresse gehört (muss über das Menü aktiviert werden)
Protokolle:
HOPO (IPv6 Hop-by-Hop-Option)
ICMP
IGMP
ESP (IPSec)
TCP
UDP
Nummer = eines der Protokolle in dieser Liste
4 = IPv4
6 = IPv6
Paket-Flags:
S = SYN
A = ACK
P = PSH
F = FIN
R = RST
Eine ausführliche Erklärung finden Sie hier.
Nur TCP-, UDP- und ICMP-Ping-Datenverkehr kann durch den Android VPN-Dienst geleitet werden. Alle anderen Daten werden verworfen und im globalen Datenverkehrsprotokoll als blockiert angezeigt. Dies ist auf einem Android-Gerät fast nie ein Problem.
(28) Warum wird den Google-Konnektivitätsdiensten standardmäßig der Internetzugang gestattet?
Die Systemanwendung der Google-Konnektivitätsdienste prüft, ob das aktuelle Netzwerk wirklich mit dem Internet verbunden ist. Dies wird wahrscheinlich durch eine kurze Verbindung zu einem Google-Server erreicht.
Wenn dies nicht der Fall ist, erscheint ein '!' im Wi-Fi- oder Mobil-Symbol in der Systemstatusleiste.
Neuere Android-Versionen scheinen die Konnektivität nicht von Mobil auf Wi-Fi umzuschalten, wenn das Wi-Fi-Netzwerk nicht wirklich verbunden ist, obwohl eine Verbindung zum Wi-Fi-Netzwerk besteht (oder umgekehrt). Unter Android 6.0 und höher erhalten Sie möglicherweise eine Benachrichtigung, in der Sie gefragt werden, ob Sie die Verbindung aufrechterhalten möchten oder nicht. Um eine schlechte Benutzererfahrung zu vermeiden, enthält NetGuard eine vordefinierte Regel, um die Google-Konnektivitätsdienste standardmäßig zuzulassen.
Sie können alle vordefinierten Regeln hier finden.
Sie können vordefinierte Regeln außer Kraft setzen.
(29) Warum erhalte ich die Meldung "Das von Ihnen angeforderte Element ist nicht zum Kauf verfügbar"?
Sie können nur Pro-Funktionen erwerben, wenn Sie NetGuard aus dem Google Play Store installiert haben.
(30) Kann ich auch AFWall+ auf demselben Gerät ausführen?
Sofern Sie NetGuard nicht nur testen, gibt es derzeit keinen Grund, beide zu verwenden, da sie dieselbe Funktion (Firewall) abdecken, wenn auch mit unterschiedlichen Grundvoraussetzungen (AFWall+ benötigt ein gerootetes Gerät) und Vorgehensweisen (AFWall+ verwendet iptables, während NetGuard ein VPN verwendet).
Außerdem müssen Sie die Zugriffsregeln für jede Anwendung zwischen AFWall+ und NetGuard synchron halten, da die Anwendung sonst nicht auf das Netzwerk zugreifen kann.
Einige Hinweise zur Einrichtung von AFWall+ für den gleichzeitigen Einsatz mit NetGuard:
Wenn Sie keine Filterung in NetGuard verwenden, benötigen die Anwendungen direkten Internetzugang (Wi-Fi und/oder mobil) in AFWall+
Wenn Sie die Filterung verwenden, benötigt NetGuard einen Internetzugang (Wi-Fi und/oder mobil) in AFWall+
Wenn Sie die Filterung verwenden, müssen Sie NetGuard in AFWall+ wieder zulassen, wenn Sie NetGuard deinstallieren/neu installieren.
Wenn Sie die Filterung verwenden, benötigen die Anwendungen einen VPN-Internetzugang (aktivieren Sie das Kontrollkästchen, um diese Option in den AFWall+-Einstellungen anzuzeigen).
Diese Frage wurde von der Community gestellt. Es gibt keine Unterstützung für die Verwendung von NetGuard und AFWall+ zusammen.
(31) Warum können einige Anwendungen nur als Gruppe konfiguriert werden?
Für viele Zwecke, einschließlich des Netzwerkzugriffs, gruppiert Android Anwendungen nach UID und nicht nach Paket/Anwendungsname. Insbesondere Systemanwendungen haben oft dieselbe UID, obwohl sie einen anderen Paket- und Anwendungsnamen haben; diese werden vom ROM-Hersteller bei der Erstellung so eingerichtet. Diesen Anwendungen kann nur als Gruppe der Zugang zum Internet erlaubt/gesperrt werden.
(32) Warum ist der Akku-/Netzwerkverbrauch von NetGuard so hoch?
Das liegt daran, dass Android die Batterie- und Netzwerknutzung zählt, die normalerweise für andere Anwendungen gegen NetGuard im IP-Filtermodus gezählt wird. Der gesamte Akkuverbrauch ist etwas höher, wenn der IP-Filtermodus aktiviert ist. Der IP-Filtermodus ist bei Android-Versionen vor 5.0 immer aktiviert, bei späteren Android-Versionen ist er optional.
(33) Können Sie Profile hinzufügen?
Profile sind unpraktisch, da sie manuell bedient werden müssen. Bedingungen wie "Wenn der Bildschirm eingeschaltet ist" sind dagegen praktisch, weil sie automatisch funktionieren. Daher werden keine Profile hinzugefügt, aber Sie können gerne neue Bedingungen vorschlagen; diese müssen jedoch allgemein verwendbar sein, um aufgenommen zu werden.
Als Abhilfe können Sie die Export-/Importfunktion verwenden, um bestimmte Einstellungen unter bestimmten Umständen anzuwenden. Alternativ können Sie auch den Sperrmodus als Profil verwenden.
(34) Können Sie eine Bedingung "wenn im Vordergrund" oder "wenn aktiv" hinzufügen?
Aktuelle Android-Versionen erlauben es einer Anwendung nicht, abzufragen, ob andere Anwendungen im Vordergrund/Hintergrund oder aktiv/inaktiv sind, ohne eine zusätzliche, die Privatsphäre verletzende Berechtigung zu besitzen und auf Kosten eines zusätzlichen Batterieverbrauchs (da eine regelmäßige Abfrage erforderlich ist). Daher kann dies nicht ohne erhebliche Nachteile, wie diesen, hinzugefügt werden. Sie können stattdessen die Bedingung "wenn der Bildschirm eingeschaltet ist" verwenden.
(35) Warum startet das VPN nicht?
NetGuard "bittet" Android, den lokalen VPN-Dienst zu starten, aber einige Android-Versionen enthalten einen Fehler, der den (automatischen) Start des VPN verhindert. Manchmal wird dies durch ein Update von NetGuard verursacht. Leider kann dieser Fehler nicht von NetGuard behoben werden. Sie können versuchen, Ihr Gerät neu zu starten und/oder die VPN-Berechtigungen von NetGuard über die Android-Einstellungen zu widerrufen. Manchmal hilft es auch, NetGuard zu deinstallieren und neu zu installieren (exportieren Sie vorher unbedingt Ihre Einstellungen!).
(36) Können Sie einen PIN- oder Passwortschutz hinzufügen?
Da das Ausschalten des VPN-Dienstes über die Android-Einstellungen nicht verhindert werden kann, ist es wenig sinnvoll, einen PIN- oder Passwortschutz hinzuzufügen.
(37) Warum sind die Profi-Funktionen so teuer?
Die richtige Frage lautet: "Warum gibt es so viele Steuern und Gebühren":
Mehrwertsteuer: 25% (abhängig von Ihrem Land)
Google-Gebühr: 30%
Einkommenssteuer: 50%
Was für den Entwickler übrig bleibt, ist also nur ein Bruchteil dessen, was Sie bezahlen.
Obwohl NetGuard wirklich viel Arbeit macht, müssen nur einige der Komfort- und erweiterten Funktionen gekauft werden, was bedeutet, dass NetGuard im Grunde kostenlos ist und Sie nichts bezahlen müssen, um Ihren Datenverbrauch zu reduzieren, die Akkulaufzeit zu erhöhen und Ihre Privatsphäre zu schützen.
Beachten Sie auch, dass die meisten kostenlosen Anwendungen am Ende nicht nachhaltig zu sein scheinen, während NetGuard ordnungsgemäß gewartet und unterstützt wird, und dass kostenlose Anwendungen einen Haken haben können, wie z. B. das Senden von datenschutzrelevanten Informationen an das Internet.
Siehe hier für weitere Informationen.
(38) Warum hat NetGuard aufgehört zu laufen?
Vergewissern Sie sich zunächst, dass Sie in den Android-Einstellungen die Akku-Optimierung für NetGuard deaktiviert haben.
Auf den meisten Geräten läuft der NetGuard im Hintergrund mit seinem Dienst im Vordergrund weiter. Auf einigen Geräten (insbesondere einigen Samsung-Modellen), auf denen viele Anwendungen um den Speicher konkurrieren, kann Android NetGuard als letzte Möglichkeit noch stoppen. Einige Android-Versionen, insbesondere von Huawei (siehe hier für einen Fix) oder Xiaomi (siehe hier für einen Fix) stoppen Apps und Dienste zu aggressiv. Dies kann leider nicht von NetGuard behoben werden und kann als Mangel des Gerätes und/oder als Fehler in Android angesehen werden. In der Tat leiden viele Apps unter diesem Problem, siehe die Website Don't kill my app! für weitere Informationen und Lösungen. Sie können dieses Problem umgehen, indem Sie in den erweiterten Optionen des NetGuard den Watchdog aktivieren, der alle 10-15 Minuten überprüft.
(39) Wie unterscheidet sich eine VPN-basierte Firewall von einer iptables-basierten Firewall?
Siehe diese Stack Exchange-Frage.
(40) Kann man Zeitpläne hinzufügen?
Abgesehen davon, dass es nicht trivial ist, Zeitpläne hinzuzufügen, sind sie - meiner Meinung nach - keine gute Idee, da Zeit keine gute Regelbedingung ist. Eine Regelbedingung wie Wenn der Bildschirm eingeschaltet ist ist eine bessere und einfachere Bedingung. Daher werden keine Zeitpläne hinzugefügt, aber Sie können gerne andere neue Bedingungen vorschlagen.
(41) Können Sie Wildcards / Adress-/Portbereiche hinzufügen?
Wildcards zum Zulassen/Blockieren von Adressen und Adress-/Anschlussbereichen hätten erhebliche Auswirkungen auf die Leistung und Benutzerfreundlichkeit und werden daher nicht hinzugefügt. Wildcard-Regeln und Adress-/Port-Bereiche müssten für jeden einzelnen Verbindungsversuch überprüft werden. Da NetGuard im Gegensatz zu anderen No-Root-Firewalls Domänennamen anstelle von IP-Adressen blockiert, gibt es kaum einen Bedarf für Wildcards.
(42) Warum wird die Berechtigung ... benötigt?
INTERNET ('Voller Netzwerkzugriff'): um erlaubten (gefilterten) Datenverkehr an das Internet weiterzuleiten
ACCESS_NETWORK_STATE ("Netzwerkverbindungen anzeigen"): um zu prüfen, ob das Gerät über Wi-Fi mit dem Internet verbunden ist
READ_PHONE_STATE ('Device ID & call information'): um Änderungen im Mobilfunknetz zu erkennen, siehe hier für weitere Details
ACCESS_WIFI_STATE ("Wi-Fi-Verbindungsinformationen"): zur Erkennung von Änderungen im Wi-Fi-Netzwerk
RECEIVE_BOOT_COMPLETED ('Run at startup'): zum Starten der Firewall beim Booten des Geräts
WAKE_LOCK ("Gerät am Schlafen hindern"): zum zuverlässigen Neuladen von Regeln im Hintergrund bei Änderungen der Konnektivität
VIBRATE: um eine Vibrationsrückmeldung beim Antippen des Widgets zu geben
FOREGROUND_SERVICE ('Vordergrunddienst'): zur Ausführung eines Vordergrunddienstes unter Android 9 Pie und höher
QUERY_ALL_PACKAGES: zum Auflisten aller Apps unter Android 11 und höher
BILLING: zur Verwendung der In-App-Abrechnung
(43) Ich erhalte die Meldung "Diese App führt dazu, dass Ihr Gerät langsam läuft".
Diese Meldung wird vom Smart Manager angezeigt, aber eigentlich ist es die Smart Manager-Anwendung selbst, die Verzögerungen und Lags verursacht. Einige Links:
Smart Manager beschwert sich über LastPass
Smart Manager deaktivieren?
(44) Ich erhalte keine Benachrichtigungen beim Zugriff
Um eine hohe Anzahl von Benachrichtigungen in der Statusleiste zu vermeiden, wird die Benachrichtigung bei Zugriff nur einmal pro Domainname und Anwendung durchgeführt. Zugriffe auf Domänennamen, die im Zugriffsprotokoll der Anwendung angezeigt werden (Drilldown in den NetGuard-Anwendungseinstellungen), werden nicht erneut benachrichtigt, selbst wenn Sie die Benachrichtigung bei Zugriff gerade aktiviert haben. Um wieder für alle Domainnamen benachrichtigt zu werden, können Sie das Anwendungszugriffsprotokoll über das Mülleimer-Symbol löschen. Wenn Sie alle Anwendungsprotokolle löschen möchten, können Sie Ihre Einstellungen exportieren und importieren.
Ein weiterer Grund, warum Sie keine Benachrichtigungen erhalten, könnte ein aktivierter Energiesparmodus sein, z. B. bei Samsung-Geräten. Auch wenn Sie die CPU-Frequenz in diesem Modus nicht einschränken.
(45) Verarbeitet NetGuard eingehende Verbindungen?
Der Android VPN-Dienst behandelt nur ausgehende Verbindungen (von Anwendungen zum Internet), eingehende Verbindungen werden also normalerweise nicht behandelt.
Wenn Sie eine Serveranwendung auf Android ausführen möchten, sollten Sie beachten, dass die Verwendung von Portnummern unter 1024 Root-Berechtigungen erfordert und dass einige Android-Versionen Routing-Fehler enthalten, die dazu führen, dass eingehender Datenverkehr fälschlicherweise in das VPN geleitet wird.
(46) Kann ich eine Rückerstattung erhalten?
Wenn eine gekaufte Pro-Funktion nicht wie beschrieben funktioniert und dies nicht durch ein Problem in den kostenlosen Funktionen verursacht wird und ich das Problem nicht zeitnah beheben kann, können Sie eine Rückerstattung erhalten. In allen anderen Fällen ist eine Rückerstattung nicht möglich. In keinem Fall kann es eine Rückerstattung für ein Problem im Zusammenhang mit den kostenlosen Funktionen geben, da für diese nichts bezahlt wurde und sie ohne Einschränkung bewertet werden können. Ich übernehme die Verantwortung als Verkäufer, das zu liefern, was versprochen wurde, und ich erwarte, dass Sie die Verantwortung übernehmen, sich über das zu informieren, was Sie kaufen.
(48) Warum werden einige Domänennamen blockiert, obwohl sie als erlaubt eingestellt sind?
NetGuard blockiert den Datenverkehr auf der Grundlage der IP-Adressen, mit denen eine Anwendung versucht, eine Verbindung herzustellen. Wenn mehr als ein Domänenname auf dieselbe IP-Adresse verweist, können sie nicht unterschieden werden. Wenn Sie für 2 Domänen, die auf dieselbe IP-Adresse aufgelöst werden, unterschiedliche Regeln festlegen, werden beide blockiert.
Danke @pulser
Ein weiteres mögliches Problem ist, dass Android den DNS-TTL-Wert nicht beachtet und seine eigenen Caching-Regeln anwendet. Dies könnte dazu führen, dass NetGuard einen DNS-Eintrag zu früh oder zu spät aus seinem eigenen Cache löscht, was dazu führt, dass eine IP-Adresse nicht oder falsch erkannt wird. Sie können versuchen, dieses Problem zu umgehen, indem Sie den DNS-TTL-Wert von NetGuard ändern. Dieser Wert wird als minimaler DNS TTL-Wert verwendet, um das Verhalten von Android zu imitieren.
NetGuard blockiert den Datenverkehr auch, wenn der Android-VPN-Dienst neu gestartet wird, um neue Regeln anzuwenden, z. B. wenn sich die Konnektivität ändert oder wenn der Bildschirm ein- oder ausgeschaltet wird.
(49) Verschlüsselt NetGuard meinen Internetverkehr / verbirgt es meine IP-Adresse?
NetGuard ist eine Firewall-Anwendung, die den Internetverkehr auf Ihrem Gerät filtert (siehe auch diese Frage). Sie ist also nicht dazu gedacht - und tut es auch nicht -, Ihren Internetverkehr zu verschlüsseln oder Ihre IP-Adresse zu verbergen.
(50) Wird NetGuard beim Booten automatisch gestartet?
Ja, NetGuard wird beim Hochfahren automatisch gestartet, wenn Sie Ihr Gerät mit aktiviertem NetGuard ausgeschaltet haben und NetGuard nicht auf einem externen Speicher installiert ist.
Einige Geräte, z. B. OnePlus- und Mi-Geräte, können verhindern, dass bestimmte Apps nach dem Neustart automatisch gestartet werden. Dies kann in den Android-Einstellungen deaktiviert werden.
(51) Warum blockiert der NetGuard den gesamten Internetverkehr?
Vergewissern Sie sich, dass Sie NetGuard auf die Doze-Ausnahmeliste gesetzt haben (Android 6 Marshmallow oder höher) und dass Android NetGuard erlaubt, das Internet im Hintergrund zu nutzen (siehe auch diese Frage).
Stellen Sie sicher, dass Sie NetGuard nicht im Erlaubnismodus (Whitelist) betreiben (überprüfen Sie die Standardeinstellungen von NetGuard).
Stellen Sie sicher, dass Sie die Always-On-VPN-Unteroption "Verbindungen ohne VPN blockieren" nicht aktiviert haben (Android 8 Oreo oder höher). Dadurch wird auch die Auflösung von Domainnamen blockiert (ist das ein Fehler oder eine Funktion?).
Einige Internetanbieter blockieren alle DNS-Anfragen, außer über ihre eigenen DNS-Server. Wenn Sie also benutzerdefinierte DNS-Server konfiguriert haben, versuchen Sie, dies rückgängig zu machen.
Einige Android-Versionen, darunter LineageOS und /e/ für einige Geräte, enthalten einen Fehler, der dazu führt, dass der gesamte Internetverkehr blockiert wird. Meistens können Sie diesen Fehler umgehen, indem Sie die Filterung in den erweiterten Optionen von NetGuard aktivieren. Wenn dies das Problem nicht löst, kann es leider nicht von NetGuard behoben oder umgangen werden. Bitte schauen Sie hier für eine Lösung.
(52) Was ist der Lockdown-Modus?
Im Sperrmodus wird der gesamte Datenverkehr für alle Anwendungen blockiert, mit Ausnahme von Anwendungen, für die die Bedingung "Im Sperrmodus zulassen" aktiviert ist. Sie können diesen Modus verwenden, um die Nutzung des Akkus oder des Netzes einzuschränken, z. B. wenn Ihr Akku fast leer ist oder Ihr Datenkontingent fast erschöpft ist.
Beachten Sie, dass der Sperrmodus nur angewendet werden kann, wenn die entsprechende Option auch unter "Netzwerkoptionen" eingestellt ist (eine für den Wi-Fi-Modus, eine für mobile Daten), so dass die Sperrung nur in einem der beiden Netzwerkmodi und nicht im anderen erfolgen kann (z. B. Sperren, wenn mobile Daten aktiv sind, aber nicht, wenn Wi-Fi gerade verwendet wird).
Beachten Sie auch, dass Systemanwendungen in diesem Modus nur blockiert werden, wenn die Verwaltung von Systemanwendungen in den erweiterten Einstellungen aktiviert ist.
Sie können den Sperrmodus im Hauptmenü, über ein Widget oder über eine Einstellungs-Kachel aktivieren/deaktivieren (Android 7 Nougat oder höher).
(53) Die Übersetzung in meiner Sprache fehlt / ist falsch / unvollständig
Sie können hier Übersetzungen beisteuern (die Registrierung ist kostenlos). Wenn deine Sprache fehlt, kontaktiere mich bitte, damit ich sie hinzufügen kann.
(54) Wie kann ich alle TCP-Verbindungen durch das Tor-Netzwerk tunneln?
Tor mit NetGuard wird nur im XDA NetGuard Forum unterstützt. Es gibt keinen persönlichen Support für Tor mit NetGuard, da ich Tor selbst nicht benutze.
Installiere zunächst Orbot, den Android-Client für Tor, starte ihn, drücke auf Start, während er sich verbindet, öffne die Einstellungen und stelle sicher, dass er so eingestellt ist, dass er beim Start des Gerätes automatisch startet.
In den Netzwerkoptionen von NetGuard aktiviere Subnetz-Routing und in den erweiterten Optionen SOCKS5-Proxy verwenden mit der Adresse 127.0.0.1 und dem Port 9050 (das ist der Standard-Port, wenn du ihn in Orbot geändert hast, dann ändere ihn auch hier).
Das sollte ausreichen. Wenn der Test fehlschlägt (z.B. keine Verbindung), können Sie die App-Details von Orbot öffnen, das Häkchen bei Regeln und Bedingungen anwenden entfernen und es erneut versuchen.
Wie man testet: Öffne Firefox (oder einen anderen nicht-proxyfähigen Browser) mit der Adresse https://ipleak.net/ und du solltest eine andere IP-Adresse als deine normale sehen, und unten im Feld Tor Exit Node etwas anderes als Unknown.
Sei dir bewusst, dass alle anderen Tor-Hinweise (https://www.torproject.org/docs/faq.html.en) immer noch gelten, wie z.B. dass das Tor-Netzwerk nicht erreichbar ist, deine Aktivitäten in deinem Land aktiv überwacht/gezielt werden, Online-Dienste (z.B. Gmail, Google Play Store) sich nicht anmelden können oder du gezwungen bist, endlose Capchas zu lösen, wenn du auf Seiten zugreifst, die Cloudflare's CDN-Dienste nutzen.
(55) Warum verbindet sich NetGuard mit Amazon / ipinfo.io / 216.239.34.21?
NetGuard stellt eine Verbindung zu Amazon / ipinfo.io her, um die Namen und Organisationen für IP-Adressen anzuzeigen. Wenn Sie dies nicht wünschen, deaktivieren Sie einfach die Anzeige von Namen und Organisationen über das Drei-Punkte-Menü in der globalen Protokollansicht.
(56) Warum lässt der NetGuard den gesamten Internetverkehr zu?
NetGuard kann jede einzelne Anwendung blockieren, sogar Systemanwendungen und -komponenten.
NetGuard lässt standardmäßig jeglichen Datenverkehr zu, um schwer zu findende Probleme zu vermeiden. Sie müssen den Datenverkehr selbst selektiv blockieren, indem Sie auf das Mobil- oder Wi-Fi-Symbol tippen.
Beachten Sie, dass NetGuard den Datenverkehr zu einer Anwendung zulässt, wenn der Bildschirm eingeschaltet ist und die Bedingung "wenn Bildschirm eingeschaltet" aktiviert ist.
(57) Warum verbraucht der NetGuard so viele Daten?
Im Grunde genommen verbraucht NetGuard selbst keine Daten. Bei vielen Android-Versionen werden jedoch die Daten anderer Anwendungen, die durch NetGuard fließen, fälschlicherweise dem NetGuard statt den Anwendungen zugerechnet. In diesem Fall ist der Datenverbrauch anderer Anwendungen bei aktiviertem NetGuard gleich Null.
Der gesamte Datenverbrauch Ihres Geräts ist mit und ohne NetGuard gleich.
(58) Warum dauert das Laden der Anwendungsliste so lange?
Die Anwendungsliste wird von Android bereitgestellt, daher hängt die Ladegeschwindigkeit hauptsächlich von der Leistung Ihres Geräts und der Effizienz Ihrer Android-Version ab. So kann z. B. Speicherknappheit zu längeren Ladezeiten führen, da Speicher freigegeben werden muss, z. B. durch das Pausieren anderer Anwendungen.
Es ist bekannt, dass die Einschränkung von Systemanwendungen und Systemkomponenten unter bestimmten Umständen dazu führt, dass die Anwendungsliste langsam oder gar nicht geladen wird. Die genauen Umstände sind nicht bekannt.
(59) Können Sie mir helfen, meinen Kauf wiederherzustellen?
Google verwaltet alle Käufe, so dass ich als Entwickler keine Kontrolle über die Käufe habe. Daher kann ich Ihnen nur einige Ratschläge geben:
Stellen Sie sicher, dass Sie eine aktive Internetverbindung haben.
Stellen Sie sicher, dass Sie den Google Play Store / die Play-Dienste nicht blockiert haben.
Vergewissern Sie sich, dass Sie mit dem richtigen Google-Konto angemeldet sind und dass mit Ihrem Google-Konto alles in Ordnung ist.
Stellen Sie sicher, dass Sie NetGuard über das richtige Google-Konto installiert haben, wenn Sie mehrere Google-Konten auf Ihrem Gerät eingerichtet haben
Öffnen Sie die Play Store-App und warten Sie mindestens eine Minute, um ihr Zeit zu geben, sich mit den Google-Servern zu synchronisieren.
Öffnen Sie NetGuard und navigieren Sie zum Bildschirm mit den Profi-Funktionen; NetGuard wird die Einkäufe erneut überprüfen
Sie können auch versuchen, den Cache der Play Store-App über die Einstellungen der Android-Apps zu löschen.
Beachten Sie dies:
Einkäufe werden in der Google-Cloud gespeichert und können nicht verloren gehen.
Es gibt keine zeitliche Begrenzung für Einkäufe, sie können also nicht verfallen
Google gibt keine Details (Name, E-Mail, etc.) über Käufer an Entwickler weiter.
Eine Anwendung wie NetGuard kann nicht auswählen, welches Google-Konto verwendet werden soll.
Es kann eine Weile dauern, bis die Play Store-App einen Kauf mit einem anderen Gerät synchronisiert hat
Play Store-Einkäufe können nicht ohne den Play Store verwendet werden, was nach den Play Store-Regeln ebenfalls nicht zulässig ist
Wenn Sie das Problem mit dem Kauf nicht lösen können, müssen Sie sich mit Google in Verbindung setzen.
(60) Warum funktionieren IP (Wi-Fi) Anrufe/SMS/MMS nicht?
Bitte lesen Sie dazu den Abschnitt über die Kompatibilität (wenn Sie ein mobiles Gerät verwenden, müssen Sie möglicherweise die Desktop-Version anfordern, um diesen Abschnitt zu sehen).
(61) Hilfe, NetGuard ist abgestürzt!
NetGuard stürzt selten ab ("unerwartet gestoppt"), aber wenn es abgestürzt ist (was etwas anderes ist, als von Android gestoppt zu werden, siehe diese FAQ), dann liegt es meist an Fehlern in Ihrer Android-Version (entweder in der Implementierung des Android-VPN-Dienstes oder im Android-Linux-Kernel). Ich bin gerne bereit, die Ursache eines Absturzes zu überprüfen und wenn möglich zu beheben, aber dazu benötige ich ein Logcat, das von Ihrem PC mit dem Absturzprotokoll aufgezeichnet wurde. Da Logcats meist recht umfangreich sind, benötige ich auch den genauen Zeitpunkt des Absturzes. Wenn Sie nicht wissen, wie Sie ein Logcat von Ihrem PC erfassen können, verwenden Sie bitte Ihre Lieblingssuchmaschine, um eine der zahlreichen Anleitungen zu finden.
(62) Wie kann ich das Problem "Es gab ein Problem beim Parsen des Pakets" lösen?
Wahrscheinliche Ursachen sind, dass die heruntergeladene APK-Datei beschädigt ist (was durch einen Virenscanner verursacht werden könnte) oder dass Sie versuchen, NetGuard auf einer nicht unterstützten Android-Version zu installieren.
(63) Warum ist der gesamte DNS-Verkehr erlaubt?
NetGuard blockiert im Gegensatz zu allen anderen Android-Firewalls echte Domainnamen. Hierfür muss eine Liste von Domainnamen und IP-Adressen erstellt werden. Zu diesem Zweck lässt NetGuard jeglichen DNS-Verkehr zu, auch wenn der Domainname in der Hosts-Datei aufgeführt ist. Das bedeutet jedoch nicht, dass der Verkehr zur aufgelösten IP-Adresse erlaubt ist.
Wenn Sie dem System (Google) oder den DNS-Servern Ihres Providers nicht trauen, können Sie in den erweiterten Einstellungen alternative DNS-Server festlegen. Achten Sie darauf, die Adressen einzugeben und zu bestätigen und zwei DNS-Serveradressen festzulegen. Wenn Sie nur eine DNS-Serveradresse eingeben, wird diese zusätzlich zu den Standard-DNS-Serveradressen verwendet.
(64) Können Sie DNS über TLS/HTTP hinzufügen?
Wenn Sie DNS-over-HTTP- (DoH) oder DNS-over-TLS- (DoT) Anfragen abfangen wollen, um Domänennamen aufzulösen, ist dies nicht möglich, da der DoH/DoT-Verkehr verschlüsselt ist, was ja der Sinn von DoH/DoT ist.
Bitte lesen Sie hier, wie Sie DoH/DoT trotzdem mit NetGuard nutzen können.
(65) Warum kann sich NetGuard nicht selbst blockieren?
Zunächst einmal, wenn NetGuard sich selbst blockieren kann, sollten Sie darauf vertrauen, dass NetGuard sich wirklich selbst blockiert, was im Grunde dasselbe ist, wie darauf zu vertrauen, dass NetGuard sich nicht mit dem Internet verbindet, wenn es nicht benötigt wird.
Beachten Sie, dass NetGuard sich mit dem Internet verbinden muss, um den Datenverkehr anderer Anwendungen an das Internet weiterzuleiten und um Informationen über IP-Adressen nachzuschlagen, siehe auch diese FAQ.
NetGuard konnte sich in älteren Versionen selbst blockieren, aber das erforderte den Aufruf von VpnService.protect für jede einzelne Verbindung. Da es in einer typischen Android-Umgebung viele Verbindungen von vielen Apps gibt, führte dies zu einer Verschwendung von Batteriestrom und zu Abstürzen auf einigen Android-Versionen mit Fehlern in dieser Funktion.
Da das Blockieren von NetGuard mit sich selbst nichts Nützliches gebracht hat, wurde das Blockieren von NetGuard mit sich selbst entfernt, um Batteriestrom zu sparen und Abstürze zu vermeiden.
(66) Warum greift eine blockierte App trotzdem auf das Internet zu?
Gesperrte Anwendungen können nicht auf das Internet zugreifen. Hierfür gibt es keine Ausnahmen. Der gesamte App- und Systemverkehr fließt durch den Android-VPN-Dienst, was für Unternehmen mit hohen Sicherheitsanforderungen ein Muss ist. Das bedeutet auch, dass alle Apps gleich behandelt werden und dass das globale Zugriffsprotokoll (Protokoll anzeigen im Drei-Punkte-Überlaufmenü) den gesamten Datenverkehr anzeigt.
Allerdings:
Apps können lokal zwischengespeicherte Inhalte anzeigen
Eingehende (Push-)Nachrichten werden von der Systemkomponente Google Play-Dienste und nicht von Apps empfangen, insbesondere wenn die App im Hintergrund läuft oder der Bildschirm ausgeschaltet ist.
Ebenso wird Werbung meist von der Systemkomponente Google Play-Dienste empfangen.
Downloads werden oft durch den Download-Manager und nicht durch Apps durchgeführt.
Wenn Sie Google Play-Dienste oder den Download-Manager blockieren möchten, müssen Sie die Verwaltung von System-Apps in den erweiterten Einstellungen aktivieren.
Wenn Sie sicherstellen möchten, dass Push-Nachrichten immer empfangen werden, können Sie Regeln und Bedingungen für Google Play-Dienste anwenden deaktivieren.
Um es klar zu sagen: In den meisten Fällen können Sie Anzeigen nicht durch das Blockieren von Apps blockieren. Sie können jedoch mit NetGuard Werbung für alle Apps blockieren, wie das geht, erfahren Sie hier.
(67) Wer ist "nobody"?
"nobody" ist die übliche Bezeichnung für ein Benutzerkonto, das keine Dateien besitzt, in keiner privilegierten Gruppe ist und keine anderen Fähigkeiten hat als die, die jeder andere Benutzer hat.
NetGuard wird nur für Telefone und Tablets unterstützt, also nicht für andere Gerätetypen wie Fernsehgeräte oder Fahrzeuge.
Wenn Sie die Antwort auf Ihre Frage nicht gefunden haben, können Sie Ihre Fragen in diesem Forum stellen oder mich über dieses Kontaktformular kontaktieren.

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NetGuard
========
Please scroll down if you want to ask a question, request a feature, or report a bug.
[Deutsche Übersetzung](https://raw.githubusercontent.com/M66B/NetGuard/master/FAQ-de.txt)
Frequently Asked Questions (FAQ)
--------------------------------
<a name="faq0"></a>
**(0) How do I use NetGuard?**
* Enable the NetGuard firewall using the switch in NetGuard's action bar
* Allow (greenish\*) or deny (reddish\*) Wi-Fi or mobile internet access using the icons next to an application name in NetGuard's applications list
You can use *Settings > Defaults* to change from block/blacklist mode (disable *Block Wi-Fi* and *Block mobile*, and then block unwanted applications in NetGuard's applications list) to allow/whitelist mode (enable *Block Wi-Fi* and *Block mobile*, and then allow desired applications in NetGuard's applications list).
\* Depending on the theme you use, the icons may be:
* Allowed (internet access permitted): greenish (teal) / blue / purple / gray
* Blocked (internet access denied): reddish (salmon) / orange / yellow / amber
<a name="faq1"></a>
**(1) Can NetGuard completely protect my privacy?**
No - nothing can completely protect your privacy.
NetGuard will do its best, but it is limited by the fact it must use the Android VPN service.
This is the trade-off required to make a firewall which does not require root access.
The firewall can only start when Android "allows" it to start,
so it will not offer protection during early boot-up (although you can disable your network before rebooting).
Also, the Android VPN service needs to be restarted to apply new rules when connectivity has changed or when the screen is being turned on or off.
It will, however, be much better than nothing.
In the advanced options you can enable *Seamless VPN handover on reload* to prevent traffic from leaking when the Android VPN service is being restarted.
However, this does not work properly on all Android versions/variants causing NetGuard to hang and block all connections.
On Android N and later NetGuard can be configured as [Always-On VPN](https://developer.android.com/guide/topics/connectivity/vpn#always-on).
On Android O **do not** enable the sub option '*Block connections without VPN*', see [question 51](#user-content-faq51)) for more information on this.
To protect yourself more, remember to disable Wi-Fi and mobile data before rebooting,
and only enable them on reboot, after the firewall service has started (and the key icon is visible in the status bar).
Thanks @[pulser](https://github.com/pulser/)
<a name="faq2"></a>
**(2) Can I use another VPN application while using NetGuard**
If the VPN application is using the [VPN service](http://developer.android.com/reference/android/net/VpnService.html),
then no, because NetGuard needs to use this service. Android allows only one application at a time to use this service.
NetGuard is a firewall application, so there is no intention to add VPN support.
However, NetGuard supports a [SOCKS5 proxy](https://en.wikipedia.org/wiki/SOCKS) to chain VPN applications.
You can find one possible community contributed solution [here](https://itsignacioportal.github.io/netguard-pdnsf-any-vpn-combo/).
<a name="faq3"></a>
**(3) Can I use NetGuard on any Android version?**
No, the minimum required Android version is 5.1 (<a href= "https://developer.android.com/about/versions/lollipop">Lollipop</a>)
<a name="faq4"></a>
**(4) Will NetGuard use extra battery power?**
By default NetGuard will hardly use any battery power.
All settings resulting in extra battery usage, like IP filtering and logging, have a warning.
If NetGuard uses a lot of battery power, please double check your settings.
The battery usage when IP filtering is enabled depends on the quality of your Android VPN service implementation and the efficiency of the processor of your device.
Generally the battery usage on older devices might be unacceptable, yet hardly noticeable on modern devices with an efficient processor.
The network speed graph notification will use extra battery power.
This is why the notification is shown only when the screen is on.
You can decrease the update frequency using the settings to reduce the battery usage.
Note that Android often incorrectly contribute battery usage of other apps to NetGuard,
because the network traffic of other apps is flowing through NetGuard.
This means that it might look like NetGuard is using a lot of battery power,
but that in fact the total battery usage of all apps is still the same.
<a name="faq6"></a>
**(6) Will NetGuard send my internet traffic to an external (VPN) server?**
No, depending on the mode of operation basically one of two things will happen with your internet traffic:
* When IP filtering is disabled, blocked internet traffic will be routed into the local VPN service, which will operate as a sinkhole (in effect dropping all blocked traffic)
* When IP filtering is enabled, both blocked and allowed internet traffic will be routed into the local VPN service and only allowed traffic will be forwarded to the intended destination (and not to a VPN server)
The [Android VPN service](http://developer.android.com/reference/android/net/VpnService.html) is being used to locally route all internet traffic to NetGuard so no root is required to build this firewall application.
NetGuard, unlike all other no-root firewalls applications, is 100% open source, so when you are in doubt you can check [the source code](https://github.com/M66B/NetGuard/) yourself.
<a name="faq7"></a>
**(7) Why are applications without internet permission shown?**
Internet permission can be granted with each application update without user consent.
By showing all applications, NetGuard allows you to control internet access even *before* such an update occurs.
<a name="faq8"></a>
**(8) What do I need to enable for the Google Play™ store app to work?**
You need 3 packages (applications) enabled (use search in NetGuard to find them quickly):
* com.android.vending (Play store)
* com.google.android.gms (Play services)
* com.android.providers.downloads (Download manager)
Since the Google Play™ store app has a tendency to check for updates or even download them all by itself (even if no account is associated),
one can keep it in check by enabling "*Allow when screen is on*" for all 3 of these packages.
Click on the down arrow on the left side of an application name and check that option,
but leave the network icons set to red (hence blocked). The little human icon will appear for those packages.
Note that NetGuard does *not* require any Google service to be installed.
<a name="faq9"></a>
**(9) Why is the VPN service being restarted?**
The VPN service will be restarted when you turn the screen on or off and when connectivity changes (Wi-Fi, mobile)
to apply the rules with the conditions *'Allow when screen is on'* and *'Block when roaming'*.
See [here](http://forum.xda-developers.com/showpost.php?p=65723629&postcount=1788) for more details.
<a name="faq10"></a>
**(10) Will you provide a Tasker plug-in?**
No, because if Tasker is allowed to disable NetGuard, any application can disable NetGuard.
Allowing a security application to be disabled by other applications is not a good idea.
<a name="faq13"></a>
**(13) How can I remove the ongoing NetGuard entry in the notification screen?**
* Long click the NetGuard notification
* Tap the 'i' icon
* Depending on your device and/or ROM manufacturer's software customizations, you can be directed to either:
* the **App Info** screen and you can uncheck '*Show notifications*' and agree to the next dialog
* the **App Notifications** screen and you can toggle the '*Block*' slider to on
Note that, whether or not you get a dialog warning to agree upon,
this operation will also disable any information or warning notifications from NetGuard,
such as the new application installed notification.
To read about the need for the notification in the first place, see [question 24](#user-content-faq24).
Some Android versions display an additional notification, which might include a key icon.
This notification, unfortunately, cannot be removed.
<a name="faq14"></a>
**(14) Why can't I select OK to approve the VPN connection request?**
There might be another (invisible) application on top of the VPN connection request dialog.
Some known (screen dimming) applications which can cause this are *Lux Brightness*, *Night Mode*, and *Twilight*.
To avoid this problem, at least temporarily, close all applications and/or services which may be running in the background.
<a name="faq15"></a>
**(15) Are F-Droid builds supported?**
F-Droid builds are not supported because I have no control over if and when the F-Droid version of NetGuard will be updated,
so I cannot guarantee timely updates, for example if there is a critical or security issue.
Because F-Droid builds and GitHub releases are signed differently, an F-Droid build needs to be uninstalled first to be able to update to a GitHub release.
<a name="faq16"></a>
**(16) Why are some applications shown dimmed?**
Disabled applications and applications without internet permission are shown dimmed.
<a name="faq17"></a>
**(17) Why is NetGuard using so much memory?**
It isn't. NetGuard doesn't allocate any memory, except a little for displaying the user interface elements and for buffering traffic.
It appears, on some Android variants, that the Google Play™ store app connection uses almost 150 MB. It is needed for in-app donations,
and is incorrectly attributed to NetGuard instead to the Google Play™ store app.
<a name="faq18"></a>
**(18) Why can't I find NetGuard in the Google Play™ store app?**
NetGuard requires at least Android 5.1, so it is not available in the Google Play™ store app on devices running prior Android versions.
<a name="faq19"></a>
**(19) Why does application XYZ still have internet access?**
If you block internet access for an application, there is no way around it.
However, applications could access the internet through other (system) applications/components.
For example, Google Play services receives incoming push messages and ads for most applications, including WhatsApp and Facebook messenger.
You can prevent this by blocking internet access for the other application/component as well.
You can block system applications and components, like Google Play services, by enabling the advanced NetGuard option *Manage system apps*.
This can best be diagnosed by checking the global access log (three dot menu, *Show log*).
Note that some applications keep trying to access the internet, which is done by sending a connection request packet.
This packet goes into the VPN sinkhole when internet access for the application is blocked.
This packet consists of less than 100 bytes and is counted by Android as outgoing traffic
and will be visible in the speed graph notification as well.
<a name="faq20"></a>
**(20) Can I Greenify/hibernate NetGuard?**
No. [Greenifying](https://play.google.com/store/apps/details?id=com.oasisfeng.greenify)
or otherwise hibernating NetGuard will result in rules not being applied
when connectivity changes from Wi-Fi/mobile, screen on/off, and roaming/not roaming.
<a name="faq21"></a>
**(21) Does doze mode affect NetGuard?**
I am not sure, because the [doze mode documentation](http://developer.android.com/training/monitoring-device-state/doze-standby.html)
is not clear if the [Android VPN service](http://developer.android.com/reference/android/net/VpnService.html) will be affected.
To be sure, you can disable battery optimizations for NetGuard manually like this:
```
Android settings > Battery > three dot menu > Battery optimizations > Dropdown > All apps > NetGuard > Don't optimize > Done
```
The procedure to accomplish this can vary between devices.
Disabling doze mode for NetGuard cannot be done from within NetGuard
because, according to Google, NetGuard is [not an application type allowed to do this](http://developer.android.com/training/monitoring-device-state/doze-standby.html#whitelisting-cases).
<a name="faq22"></a>
**(22) Can I tether (use the Android hotspot) / use Wi-Fi calling while using NetGuard?**
Yes, but you'll need to enable subnet routing and tethering in the NetGuard network settings.
Whether or not it works depends on your Android version
because some Android versions have a bug preventing tethering and the VPN service working together.
Some devices hibernate Wi-Fi, preventing tethering from working when the screen is off.
This behavior can be disabled in the Android enhanced/advanced Wi-Fi settings.
<a name="faq24"></a>
**(24) Can you remove the notification from the status bar?**
Android can kill background services at any time.
This can only be prevented by turning a background service into a foreground service.
Android requires an ongoing notification for all foreground services
to make you aware of potential battery usage (see [question 4](#user-content-faq4)).
So, the notification cannot be removed without causing instability.
However, the notification is being marked as low priority,
which should result in moving it to the bottom of the list.
The key icon and/or the VPN running notification,
which is shown by Android and not by NetGuard, unfortunately, cannot be removed.
The [Google documentation](http://developer.android.com/reference/android/net/VpnService.html) states:
*"A system-managed notification is shown during the lifetime of a VPN connection"*.
Android 8 Oreo and later display a notification "*... running in the background*" listing all apps running in the background.
You can't disable this notification, but you can remove the icon from the status bar like this:
* Open Settings > Apps & notifications > App info
* Open settings (three dots); Select "Show system"
* Select "Android System"
* Select "App notifications"
* Select "Apps running in background"
* Select "Importance" and select "Low"
<a name="faq25"></a>
**(25) Can you add a 'Select All' function?**
There is no need for a 'Select All' function
because you can switch from block (blacklist) to allow (whitelist) mode using Netguard's settings.
See also [question 0](#user-content-faq0).
<a name="faq27"></a>
**(27) How do I read the blocked traffic log?**
The columns have the following meanings:
1. Time (tap on a log entry to see the date)
1. Application icon (tap on a log entry to see the application name)
1. Application UID
1. Wi-Fi / mobile connection, green=allowed, red=blocked
1. Interactive state (screen on or off)
1. Protocol (see below) and packet flags (see below)
1. Source and destination port (tap on a log entry to lookup a destination port)
1. Source and destination IPv4 or IPv6 address (tap on a log entry to lookup a destination IP address)
1. Organization name owning the IP address (needs to be enabled via the menu)
Protocols:
* HOPO ([IPv6 Hop-by-Hop Option](https://en.m.wikipedia.org/wiki/IPv6_packet#Hop-by-hop_options_and_destination_options))
* ICMP
* IGMP
* ESP (IPSec)
* TCP
* UDP
* Number = one of the protocols in [this list](https://en.wikipedia.org/wiki/List_of_IP_protocol_numbers)
* 4 = IPv4
* 6 = IPv6
Packet flags:
* S = SYN
* A = ACK
* P = PSH
* F = FIN
* R = RST
For a detailed explanation see [here](https://en.wikipedia.org/wiki/Transmission_Control_Protocol).
Only TCP, UDP, and ICMP ping traffic can be routed through the Android VPN service.
All other traffic will be dropped and will be shown as blocked in the global traffic log.
This is almost never a problem on an Android device.
<a name="faq28"></a>
**(28) Why is Google connectivity services allowed internet access by default?**
The Google connectivity services system application checks if the current network is really connected to the internet.
This is probably accomplished by briefly connecting to some Google server.
If this is not the case, there will be an '!' in the Wi-Fi or mobile icon in the system status bar.
Recent Android versions seem not to switch connectivity from mobile to Wi-Fi when the Wi-Fi network is not really connected,
even though there is a connection to the Wi-Fi network (or the other way around). On Android 6.0 and later you might get a notification asking you if you want to keep this connection on or not.
To prevent a bad user experience, NetGuard includes a predefined rule to default allow the Google connectivity services.
You can find all predefined rules [here](https://github.com/M66B/NetGuard/blob/master/app/src/main/res/xml/predefined.xml).
You can override predefined rules.
<a name="faq29"></a>
**(29) Why do I get 'The item you requested is not available for purchase'?**
You can only purchase pro features when you have installed NetGuard from the Google Play store.
<a name="faq30"></a>
**(30) Can I also run AFWall+ on the same device?**
Unless you are just testing NetGuard, there is no current reason to use them both, since they cover the same function (firewall),
although with different base needs (AFWall+ needs a rooted device) and ways of doing their thing (AFWall+ uses iptables whereas NetGuard uses a VPN).
Also you need to keep per application access rules _always_ in sync between AFWall+ and NetGuard,
else the application will not be able to access the network,
hence bringing another level of complexity when setting and assuring everything work as expected.
Some pointers on how to set up AFWall+ to be used simultaneously with NetGuard:
* if not using filtering in NetGuard, applications _need_ direct internet access (Wi-Fi and/or mobile) in AFWall+
* if using filtering, NetGuard will _need_ internet access (Wi-Fi and/or mobile) in AFWall+
* if using filtering, when you un/reinstall NetGuard, remember to re-allow NetGuard in AFWall+
* if using filtering, applications _need_ VPN internet access (check the box to show that option in AFWall+ settings)
This question was community contributed. There is no support on using NetGuard and AFWall+ together.
<a name="faq31"></a>
**(31) Why can some applications be configured as a group only?**
For many purposes, including network access, Android groups applications on UID and not on package/application name.
Especially system applications often have the same UID, despite having a different package and application name; these are set up like this by the ROM manufacturer at build time.
These applications can only be allowed/blocked access to the internet as a group.
<a name="faq32"></a>
**(32) Why is the battery/network usage of NetGuard so high?**
This is because Android counts battery and network usage which is normally counted for other applications
against NetGuard in IP filtering mode. The total battery usage is slightly higher when IP filtering mode is enabled.
IP filtering mode is always enabled on Android versions prior to 5.0, and optionally enabled on later Android versions.
<a name="faq33"></a>
**(33) Can you add profiles?**
Profiles are inconvenient because they need to be operated manually.
Conditions like '*When screen is on*' are, on the other hand, convenient because they work automatically.
Therefore profiles will not be added, but you are welcome to propose new conditions;
however, they need to be generally usable to be included.
As a workaround you can use the export/import function to apply specific settings in specific circumstances.
Alternatively, you can use lockdown mode as a profile.
<a name="faq34"></a>
**(34) Can you add a condition 'when on foreground' or 'when active'?**
Recent Android versions do not allow an application to query if other applications are in the foreground/background or active/inactive
without holding an [additional privacy violating permission](https://developer.android.com/reference/android/Manifest.permission.html#PACKAGE_USAGE_STATS)
and at the expense of extra battery usage (because periodic polling is required).
As a result, this cannot be added without significant disadvantages, like [this one](http://www.xda-developers.com/working-as-intended-an-exploration-into-androids-accessibility-lag/).
You can use the condition '*when screen is on*' instead.
<a name="faq35"></a>
**(35) Why does the VPN not start?**
NetGuard "asks" Android to start the local VPN service,
but some Android versions contain a bug which prevents the VPN from starting (automatically).
Sometimes this is caused by updating NetGuard.
Unfortunately this cannot be fixed by NetGuard.
You can try to restart your device and/or revoke the VPN permissions from NetGuard using the Android settings.
Sometimes it helps to uninstall and install NetGuard again (be sure to export your settings first!).
<a name="faq36"></a>
**(36) Can you add PIN or password protection?**
Since turning off the VPN service using the Android settings cannot be prevented,
there is little use in adding PIN or password protection.
<a name="faq37"></a>
**(37) Why are the pro features so expensive?**
The right question is "*why are there so many taxes and fees*":
* VAT: 25% (depending on your country)
* Google fee: 30%
* Income tax: 50%
So, what is left for the developer is just a fraction of what you pay.
Despite NetGuard being *really* a lot of work, only some of the convenience and advanced features need to be purchased,
which means that NetGuard is basically free to use
and that you don't need to pay anything to reduce your data usage, increase battery life, and increase your privacy.
Also note that most free applications will appear not to be sustainable in the end, whereas NetGuard is properly maintained and supported,
and that free applications may have a catch, like sending privacy sensitive information to the internet.
See [here](http://forum.xda-developers.com/showpost.php?p=67892427&postcount=3030) for some more information.
<a name="faq38"></a>
**(38) Why did NetGuard stop running?**
First of all, please make sure you disabled battery optimizations for NetGuard in the Android settings.
On most devices, NetGuard will keep running in the background with its foreground service.
On some devices (in particular some Samsung models), where there are lots of applications competing for memory, Android may still stop NetGuard as a last resort.
Some Android versions, in particular of Huawei (see [here](https://www.forbes.com/sites/bensin/2016/07/04/push-notifications-not-coming-through-to-your-huawei-phone-heres-how-to-fix-it/) for a fix) or Xiaomi (see [here](https://www.forbes.com/sites/bensin/2016/11/17/how-to-fix-push-notifications-on-xiaomis-miui-8-for-real/) for a fix) stop apps and services too aggressively.
Unfortunately this cannot be fixed by NetGuard, and can be considered a shortcoming of the device and/or as a bug in Android.
As a matter of fact lots of apps suffer from this, see the website [Don't kill my app!](https://dontkillmyapp.com/) for more information and solutions.
You can workaround this problem by enabling the watchdog in the NetGuard advanced options to check every 10-15 minutes.
<a name="faq39"></a>
**(39) How does a VPN based firewall differ from a iptables based firewall?**
See this [Stack Exchange question](http://android.stackexchange.com/questions/152087/any-security-difference-between-root-based-firewall-afwall-and-non-root-based).
<a name="faq40"></a>
**(40) Can you add schedules?**
Besides not being trivial to add, schedules - in my opinion - are not a good idea, since time is not a good rule condition.
A rule condition like *When screen is on* is a better and more straightforward condition.
Therefore schedules will not be added, but you are welcome to propose other new conditions.
<a name="faq41"></a>
**(41) Can you add wildcards / address/port ranges?**
Wildcards to allow/block addresses and address/port ranges would have a significant performance and usability impact and therefore will not be added.
Wildcards rules and address/port ranges would need to be checked for each and every connection attempt.
Since NetGuard blocks, unlike any other no-root firewall, domain names instead of IP addresses there is hardly a need for wildcards.
<a name="faq42"></a>
**(42) Why is permission ... needed?**
* INTERNET ('*Full network access*'): to forward allowed (filtered) traffic to the internet
* ACCESS_NETWORK_STATE ('*View network connections*'): to check if the device is connected to the internet through Wi-Fi
* READ_PHONE_STATE ('*Device ID & call information*'): to detect mobile network changes, see [here](http://forum.xda-developers.com/showpost.php?p=64107371&postcount=489) for more details
* ACCESS_WIFI_STATE ('*Wi-Fi connection information*'): to detect Wi-Fi network changes
* RECEIVE_BOOT_COMPLETED ('*Run at startup*'): to start the firewall when booting the device
* WAKE_LOCK ('*Prevent device from sleeping*'): to reliably reload rules in the background on connectivity changes
* VIBRATE: to provide vibration feedback on widget tap
* FOREGROUND_SERVICE ('foreground service'): to run a foreground service on Android 9 Pie and later
* QUERY_ALL_PACKAGES: to list all apps on Android 11 and later
* BILLING: to use in-app billing
<a name="faq43"></a>
**(43) I get 'This app is causing your device to run slowly'**
This message is displayed by the *Smart Manager*,
but actually it is the 'Smart' Manager application itself which is causing delays and lags.
Some links:
* [Smart Manager complaining about LastPass](https://www.reddit.com/r/GalaxyS6/comments/3htu2y/smart_manager_cmoplaining_about_lastpass/)
* [Disable Smart Manager?](http://forums.androidcentral.com/samsung-galaxy-s4/595483-disable-smart-manager.html)
<a name="faq44"></a>
**(44) I don't get notifications on access**
To prevent a high number of status bar notifications, notify on access is done only once per domain name per application.
Access to domain names shown in the application access log (drill down in the NetGuard application settings) will not be notified again,
even if you just enabled notify on access.
To get notified for all domain names again, you can clear the application access log using the trashcan icon.
If you want to clear all applications logs, you can export and import your settings.
Another reason why you don't get notifications could be an applied "Power Saving Mode" for example on Samsung devices. Even if you do not restrict CPU frequency in this mode.
<a name="faq45"></a>
**(45) Does NetGuard handle incoming connections?**
The Android VPN service handles outgoing connections only (from applications to the internet), so incoming connections are normally left alone.
If you want to run a server application on Android, then be aware that using port numbers below 1024 require root permissions
and that some Android versions contain routing bugs, causing inbound traffic incorrectly being routed into the VPN.
<a name="faq46"></a>
**(46) Can I get a refund?**
If a purchased pro feature doesn't work [as described](https://www.netguard.me/)
and this isn't caused by a problem in the free features
and I cannot fix the problem in a timely manner, you can get a refund.
In all other cases there is no refund possible.
In no circumstances there can be a refund for any problem related to the free features,
since there wasn't paid anything for them and because they can be evaluated without any limitation.
I take my responsibility as seller to deliver what has been promised
and I expect that you take responsibility for informing yourself of what you are buying.
<a name="faq48"></a>
**(48) Why are some domain names blocked while they are set to be allowed?**
NetGuard blocks traffic based on the IP addresses an application is trying to connect to.
If more than one domain name is on the same IP, they cannot be distinguished.
If you set different rules for 2 domains which resolve to the same IP, both will be blocked.
Thanks @[pulser](https://github.com/pulser/)
Another potential problem is that Android doesn't honor the DNS TTL value and applies its own caching rules.
This could result in NetGuard too early or too late purging a DNS record from its own cache,
resulting in not recognizing an IP address or recognizing a wrong IP address.
You can try to workaround this by changing the DNS TTL value setting of NetGuard.
This value is used as a minimum DNS TTL value in an attempt to mimick the behavior of Android.
NetGuard will also block traffic while restarting the Android VPN service to apply new rules,
for example when connectivity changes or when the screen is turned on or off.
<a name="faq49"></a>
**(49) Does NetGuard encrypt my internet traffic / hide my IP address?**
NetGuard is a firewall application that filters internet traffic on your device (see also [this question](#user-content-faq6)),
so it is not meant to - and does not - encrypt your internet traffic or hide your IP address.
<a name="faq50"></a>
**(50) Will NetGuard automatically start on boot?**
Yes, NetGuard will automatically be started on boot if you powered off your device with NetGuard enabled and NetGuard is not installed on external storage.
Some devices, for example OnePlus and Mi devices, can prevent certain apps from auto-starting after reboot.
This can be disabled in the Android settings.
<a name="faq51"></a>
**(51) Why does NetGuard block all internet traffic?!**
Make sure you have put NetGuard on the doze exception list (Android 6 Marshmallow or later)
and that Android allows NetGuard to use the internet in the background (see also [this question](#user-content-faq21)).
Make sure you are not running NetGuard in allow (whitelist) mode (check the NetGuard default settings).
Make sure you didn't enable the Always-On VPN sub option '*Block connections without VPN*' (Android 8 Oreo or later).
This will block resolving domain names too (is it a bug or feature?).
Some internet providers block all DNS requests except via their own DNS servers.
So, if you configured custom DNS servers, try to undo this.
Some Android versions, including LineageOS and /e/ for some devices, contain a bug resulting in all internet traffic being blocked.
Mostly, you can workaround this bug by enabling filtering in NetGuard's *Advanced options*.
If this doesn't solve the issue, the problem can unfortunately not be fixed or worked around by NetGuard.
Please [see here](https://forum.xda-developers.com/t/app-6-0-netguard-no-root-firewall.3233012/post-84457527) for a fix.
<a name="faq52"></a>
**(52) What is lockdown mode?**
In lockdown mode, all traffic for all applictions will be blocked,
except for applications with the condition *'Allow in lockdown mode'* enabled.
You can use this mode to limit battery usage or network usage,
for example, when your battery is almost empty or when your data allotment is almost exhausted.
Note that Lockdown mode applies only if the corresponding option is also set in "Network options"
(one for Wi-Fi mode, one for Mobile data), allowing to have lockdown in only one of the two network modes
and not in the other (eg. Lock down if mobile data are active, but not if Wi-Fi is currently used).
Note also that system applications will only be blocked in this mode
when managing system applications is enabled in the advanced settings.
You can enable/disable lockdown mode in the main menu, using a widget, or using a settings tile (Android 7 Nougat or later).
<a name="faq53"></a>
**(53) The translation in my language is missing / incorrect / incomplete**
You can contribute translations [here](https://crowdin.com/project/netguard) (registration is free).
If your language is missing, please contact me to have it added.
<a name="faq54"></a>
**(54) How to tunnel all TCP connections through the Tor network?**
Tor with NetGuard is only supported in the [XDA NetGuard forum](http://forum.xda-developers.com/showthread.php?t=3233012).
There is no personal support on Tor with NetGuard, because I don't use Tor myself.
First, install [Orbot](market://details?id=org.torproject.android), the Android client for Tor,
run it, press _Start_, while it connects open its _Settings_ and make sure it's setup to auto-start
on device start.
In NetGuard's _Network options_ enable _Subnet routing_ and in _Advanced options_ toggle on
_Use SOCKS5 proxy_ with address 127.0.0.1 and port as 9050 (this is the default port, if you changed
this in Orbot make the adjustment here also).
This should be enough, if testing fails (eg. no connection at all) you can open the app details
for Orbot, uncheck _Apply rules and conditions_ and retry.
How to test: open Firefox (or another non-proxy enabled browser) to the address https://ipleak.net/
and you should see a different IP address from your regular one, and below in the _Tor Exit Node_
field something else besides _Unknown_.
**Be aware** that all the other Tor caveats (https://www.torproject.org/docs/faq.html.en) still apply,
like having the Tor network unreacheable, your activity actively monitored/targeted in your country,
online services (eg. Gmail, Google Play store) failing to login or being forced to solve endless capchas
when accessing sites that use Cloudflare's CDN services.
<a name="faq55"></a>
**(55) Why does NetGuard connect to Amazon / ipinfo.io / 216.239.34.21?**
NetGuard connects to Amazon / [ipinfo.io](https://ipinfo.io/) to show the names and organizations for IP addresses.
If you don't want this, just disable showing names and organizations using the three dot menu in the global log view.
<a name="faq56"></a>
**(56) Why does NetGuard allow all internet traffic?!**
NetGuard can block each and every application, even system applications and components.
NetGuard, by default, allows all traffic to prevent hard to find problems. You need to selectively block traffic yourself by tapping on the mobile or Wi-Fi icons.
Be aware that NetGuard will allow traffic to an application when the screen is on and the condition *'when screen on'* is enabled.
<a name="faq57"></a>
**(57) Why does NetGuard use so much data?**
Basically, NetGuard doesn't use data itself.
However, many Android versions incorrectly account data of other applications flowing through NetGuard to NetGuard instead of to the applications.
The data usage of other applications will be zero with NetGuard enabled in this case.
The total data usage of your device will be the same with and without NetGuard.
<a name="faq58"></a>
**(58) Why does loading the application list take a long time?**
The application list is provided by Android, so the loading speed depends mostly on the power of your device and on the efficiency of your Android version.
For example shortage of memory could lead to increased loading times, because memory needs to be freed, for example by pausing other applications.
In some circumstances, restricting system apps and system components is known to cause the application list to load slowly or not at all. The exact circumstances are unknown.
<a name="faq59"></a>
**(59) Can you help me restore my purchase?**
Google manages all purchases, so as a developer I have no control over purchases.
So, the only thing I can do, is give some advice:
* Make sure you have an active internet connection
* Make sure you didn't block Google Play store / Play services
* Make sure you are logged in with the right Google account and that there is nothing wrong with your Google account
* Make sure you installed NetGuard via the right Google account if you configured multiple Google accounts on your device
* Open the Play store app and wait at least a minute to give it time to synchronize with the Google servers
* Open NetGuard and navigate to the pro features screen; NetGuard will check the purchases again
You can also try to clear the cache of the Play store app via the Android apps settings.
Note that:
* Purchases are stored in the Google cloud and cannot get lost
* There is no time limit on purchases, so they cannot expire
* Google does not expose details (name, e-mail, etc) about buyers to developers
* An app like NetGuard cannot select which Google account to use
* It may take a while until the Play store app has synchronized a purchase to another device
* Play Store purchases cannot be used without the Play Store, which is also not allowed by Play Store rules
If you cannot solve the problem with the purchase, you will have to contact Google about it.
<a name="faq60"></a>
**(60) Why does IP (Wi-Fi) calling/SMS/MMS not work?**
Please see the [compatibility section](https://github.com/M66B/NetGuard/#compatibility) about this
(you might need to request the desktop version to see this section if you are using a mobile device).
<a name="faq61"></a>
**(61) Help, NetGuard crashed!**
NetGuard rarely crashes ("unexpectedly stopped"), but if it crashed (which is something different than being stopped by Android, see [this FAQ](#user-content-faq38)),
then it is mostly caused by bugs in your Android version
(either in the [Android VPN service](https://developer.android.com/reference/android/net/VpnService.html) implementation or in the [Android Linux kernel](https://developer.android.com/guide/platform/index.html#linux-kernel)).
I am happy to check what the cause of a crash is and I will fix it whenever possible, but I need a logcat captured from your PC with the crash log for this.
Since logcats are mostly quite large, I will need the exact time of the crash as well.
If you don't know how to capture a logcat from your PC, please use your favorite search engine to find one of the numerous guides.
<a name="faq62"></a>
**(62) How can I solve 'There was a problem parsing the package' ?**
Likely causes are that the downloaded APK file is damaged (which could be caused by a virus scanner)
or that you are trying to install NetGuard on a not supported Android version.
<a name="faq63"></a>
**(63) Why is all DNS traffic allowed?**
NetGuard blocks unlike any other Android firewall on real domain names.
For this a list of domain names and IP address needs to be built.
For this purpose, NetGuard allows all DNS traffic, even if the domain name is listed in the hosts file.
However, this doesn't mean traffic to the resolved IP address is allowed.
If you don't trust the system (Google's) or your provider's DNS servers, you can set alternative DNS servers in the advanced settings.
Be sure to enter and confirm the addresses and to set two DNS server addresses.
If you enter just one DNS server address, it will be used in addition to the default DNS server addresses.
<a name="faq64"></a>
**(64) Can you add DNS over TLS/HTTP?**
If you mean to intercept [DNS over HTTP](https://en.wikipedia.org/wiki/DNS_over_HTTPS) (DoH)
or [DNS over TLS](https://en.wikipedia.org/wiki/DNS_over_TLS) (DoT) requests to resolve domain names,
this is not possible because DoH/DoT traffic is encrypted, which is the whole point of DoH/DoT.
Please [see here](https://github.com/Ch4t4r/Nebulo/blob/master/docs/NONVPNMODE.md) about how you can use DoH/DoT with NetGuard anyway.
<br />
<a name="faq65"></a>
**(65) Why can NetGuard not block itself?**
First of all, if NetGuard could block itself, you should trust that NetGuard really blocks itself,
which is basically the same as trusting that NetGuard doesn't connect to the internet when not needed.
Note that NetGuard needs to connect to the internet to forward traffic of other apps to the internet and to lookup information on IP addresses,
see also [this FAQ](#user-content-faq55).
NetGuard could block itself in older versions,
but this required calling [VpnService.protect](https://developer.android.com/reference/android/net/VpnService.html#protect(int)) for each and every connection.
Since there are lots of connections of lots of apps in a typical Android environment,
this resulted in wasting battery power and in crashes on some Android versions with bugs in this function.
So, because blocking NetGuard with itself didn't added anything useful
and to save on battery power and to prevent crashes blocking NetGuard with itself was removed.
<br />
<a name="faq66"></a>
**(66) Why is a blocked app still accessing the internet?**
Blocked apps cannot access the internet. There are no exceptions to this.
All app and system traffic flows through the [Android VPN service](https://developer.android.com/guide/topics/connectivity/vpn),
which is a *must* for companies with high security requirements.
This also means that all apps will be treated in the same way
and that the global access log (*Show log* in the three-dots overflow menu) will show all traffic.
However:
* Apps can show locally cached content
* Incoming (push) messages are received by the system component Google Play services and not apps, especially when the app is in the background or when the screen is turned off
* Similarly, advertisements are mostly received by the system component Google Play services
* Downloads are often performed by the download manager and not apps
If you like to block Google Play services or the download manager, you'll need to enable managing system apps in the advanced settings.
If you like to make sure that push messages will always be received, you can disable *Apply rules and conditions* for Google Play services.
To be clear: in most cases **you cannot block ads by blocking apps**.
However, you can block ads for all apps with NetGuard, please see [here](https://github.com/M66B/NetGuard/blob/master/ADBLOCKING.md) about how to.
<br />
<a name="faq67"></a>
**(67) Who is 'nobody'?**
["nobody" is the conventional name of a user account](https://en.wikipedia.org/wiki/Nobody_(username))
which owns no files, is in no privileged groups, and has no abilities except those which every other user has.
<br />
**NetGuard is supported for phones and tablets only, so not for other device types like televisions or vehicles.**
**If you didn't find the answer to your question, you can ask your questions [in this forum](http://forum.xda-developers.com/showthread.php?t=3233012) or contact me by using [this contact form](https://contact.faircode.eu/)**.

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GNU GENERAL PUBLIC LICENSE
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Also add information on how to contact you by electronic and paper mail.
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into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

411
NetGuard/README.md
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@ -0,0 +1,411 @@
# NetGuard
# Edits in NetGuard Code
The NetGuard code has been taken from https://github.com/M66B/NetGuard
The compilation of the code was problematic and the problem was solved by modifiying the following lines of code in app --> Gradle Scripts --> build.gradle (Module :app)
Add the following lines:
storeFile file("my.keystore")
storePassword "store_password"
keyAlias "my_key_alias"
keyPassword "key_password"
and comment out the following lines:
// def keystorePropertiesFile = rootProject.file("keystore.properties")
// def keystoreProperties = new Properties()
// keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
// storeFile file(keystoreProperties['storeFile'])
// storePassword keystoreProperties['storePassword']
// keyAlias keystoreProperties['keyAlias']
// keyPassword keystoreProperties['keyPassword']
# The readme file from this point onwards is the original readme file.
*NetGuard* provides simple and advanced ways to block access to the internet - no root required.
Applications and addresses can individually be allowed or denied access to your Wi-Fi and/or mobile connection.
<br>
**WARNING: there is an app in the Samsung Galaxy app store "*Play Music - MP3 Music player*"
with the same package name as NetGuard, which will be installed as update without your confirmation.
This app is probably malicious and was reported to Samsung on December 8, 2021.**
<br>
Blocking access to the internet can help:
* reduce your data usage
* save your battery
* increase your privacy
NetGuard is the first free and open source no-root firewall for Android.
Features:
* Simple to use
* No root required
* 100% open source
* No calling home
* No tracking or analytics
* Actively developed and supported
* Android 5.1 and later supported
* IPv4/IPv6 TCP/UDP supported
* Tethering supported
* Optionally allow when screen on
* Optionally block when roaming
* Optionally block system applications
* Optionally forward ports, also to external addresses (not available if installed from the Play store)
* Optionally notify when an application accesses the internet
* Optionally record network usage per application per address
* Optionally [block ads using a hosts file](https://github.com/M66B/NetGuard/blob/master/ADBLOCKING.md) (not available if installed from the Play store)
* Material design theme with light and dark theme
PRO features:
* Log all outgoing traffic; search and filter access attempts; export PCAP files to analyze traffic
* Allow/block individual addresses per application
* New application notifications; configure NetGuard directly from the notification
* Display network speed graph in a status bar notification
* Select from five additional themes in both light and dark version
There is no other no-root firewall offering all these features.
Requirements:
* Android 5.1 or later
* A [compatible device](#compatibility)
Downloads:
* [GitHub](https://github.com/M66B/NetGuard/releases)
* [Google Play](https://play.google.com/store/apps/details?id=eu.faircode.netguard)
Certificate fingerprints:
* MD5: B6:4A:E8:08:1C:3C:9C:19:D6:9E:29:00:46:89:DA:73
* SHA1: EF:46:F8:13:D2:C8:A0:64:D7:2C:93:6B:9B:96:D1:CC:CC:98:93:78
* SHA256: E4:A2:60:A2:DC:E7:B7:AF:23:EE:91:9C:48:9E:15:FD:01:02:B9:3F:9E:7C:9D:82:B0:9C:0B:39:50:00:E4:D4
Usage:
* Enable the firewall using the switch in the action bar
* Allow/deny Wi-Fi/mobile internet access using the icons along the right side of the application list
You can use the settings menu to change from blacklist mode (allow all in *Settings* but block unwanted applications in list) to whitelist mode (block all in *Settings* but allow favorite applications in list).
* Red/orange/yellow/amber = internet access denied
* Teal/blue/purple/grey = internet access allowed
<img src="https://raw.githubusercontent.com/M66B/NetGuard/master/screenshots/01-main.png" width="320" height="569" />
<img src="https://raw.githubusercontent.com/M66B/NetGuard/master/screenshots/02-main-details.png" width="320" height="569" />
<img src="https://raw.githubusercontent.com/M66B/NetGuard/master/screenshots/03-main-access.png" width="320" height="569" />
<img src="https://raw.githubusercontent.com/M66B/NetGuard/master/screenshots/08-notifications.png" width="320" height="569" />
For more screenshots, see [here](https://github.com/M66B/NetGuard/tree/master/screenshots).
Compatibility
-------------
The only way to build a no-root firewall on Android is to use the Android VPN service.
Android doesn't allow chaining of VPN services, so you cannot use NetGuard together with other VPN based applications.
See also [this FAQ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq2).
NetGuard can be used on rooted devices too and even offers more features than most root firewalls.
Some older Android versions, especially Samsung's Android versions, have a buggy VPN implementation,
which results in Android refusing to start the VPN service in certain circumstances,
like when there is no internet connectivity yet (when starting up your device)
or when incorrectly requiring manual approval of the VPN service again (when starting up your device).
NetGuard will try to workaround this and remove the error message when it succeeds, else you are out of luck.
Some LineageOS versions have a broken Android VPN implementation, causing all traffic to be blocked,
please see [this FAQ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq51) for more information.
NetGuard is not supported for apps installed in a [work profile](https://developer.android.com/work/managed-profiles),
or in a [Secure Folder](https://www.samsung.com/uk/support/mobile-devices/what-is-the-secure-folder-and-how-do-i-use-it/) (Samsung),
or as second instance (MIUI), or as Parallel app (OnePlus), or as Xiaomi dual app
because the Android VPN service too often does not work correctly in this situation, which can't be fixed by NetGuard.
Filtering mode cannot be used on [CopperheadOS](https://copperhead.co/android/).
NetGuard will not work or crash when the package *com.android.vpndialogs* has been removed or otherwise is unavailable.
Removing this package is possible with root permissions only.
If you disable this package, you can enable it with this command again:
```
adb shell pm enable --user 0 com.android.vpndialogs
```
NetGuard is supported for phones and tablets only, so not for other device types like on a television or in a car.
Android does not allow incoming connections (not the same as incoming traffic) and the Android VPN service has no support for this either.
Therefore managing incoming connections for servers running on your device is not supported.
Wi-Fi or IP calling will not work if your provider uses [IPsec](https://en.wikipedia.org/wiki/IPsec) to encrypt your phone calls, SMS messages and/or MMS messages,
unless there was made an exception in NetGuard for your provider (currently for T-Mobile and Verizon).
I am happy to add exceptions for other providers, but I need the [MCC](https://en.wikipedia.org/wiki/Mobile_country_code) codes, [MNC](https://en.wikipedia.org/wiki/MNC) codes and [IP address](https://en.wikipedia.org/wiki/IP_address) ranges your provider is using.
As an alternative you can enable the option '*Disable on call*', which is available since version 2.113.
<a name="FAQ"></a>
Frequently Asked Questions (FAQ)
--------------------------------
<a name="FAQ0"></a>
[**(0) How do I use NetGuard?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq0)
<a name="FAQ1"></a>
[**(1) Can NetGuard completely protect my privacy?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq1)
<a name="FAQ2"></a>
[**(2) Can I use another VPN application while using NetGuard?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq2)
<a name="FAQ3"></a>
[**(3) Can I use NetGuard on any Android version?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq3)
<a name="FAQ4"></a>
[**(4) Will NetGuard use extra battery power?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq4)
<a name="FAQ6"></a>
[**(6) Will NetGuard send my internet traffic to an external (VPN) server?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq6)
<a name="FAQ7"></a>
[**(7) Why are applications without internet permission shown?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq7)
<a name="FAQ8"></a>
[**(8) What do I need to enable for the Google Play™ store app to work?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq8)
<a name="FAQ9"></a>
[**(9) Why is the VPN service being restarted?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq9)
<a name="FAQ10"></a>
[**(10) Will you provide a Tasker plug-in?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq10)
<a name="FAQ13"></a>
[**(13) How can I remove the ongoing NetGuard entry in the notification screen?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq13)
<a name="FAQ14"></a>
[**(14) Why can't I select OK to approve the VPN connection request?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq14)
<a name="FAQ15"></a>
[**(15) Are F-Droid builds supported?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq15)
<a name="FAQ16"></a>
[**(16) Why are some applications shown dimmed?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq16)
<a name="FAQ17"></a>
[**(17) Why is NetGuard using so much memory?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq17)
<a name="FAQ18"></a>
[**(18) Why can't I find NetGuard in the Google Play™ store app?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq18)
<a name="FAQ19"></a>
[**(19) Why does application XYZ still have internet access?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq19)
<a name="FAQ20"></a>
[**(20) Can I Greenify/hibernate NetGuard?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq20)
<a name="FAQ21"></a>
[**(21) Does doze mode affect NetGuard?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq21)
<a name="FAQ22"></a>
[**(22) Can I tether (use the Android hotspot) / use Wi-Fi calling while using NetGuard?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq22)
<a name="FAQ24"></a>
[**(24) Can you remove the notification from the status bar?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq24)
<a name="FAQ25"></a>
[**(25) Can you add a 'select all'?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq25)
<a name="FAQ27"></a>
[**(27) How do I read the blocked traffic log?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq27)
<a name="FAQ28"></a>
[**(28) Why is Google connectivity services allowed internet access by default?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq28)
<a name="FAQ29"></a>
[**(29) Why do I get 'The item you requested is not available for purchase'?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq29)
<a name="FAQ30"></a>
[**(30) Can I also run AFWall+ on the same device?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq30)
<a name="FAQ31"></a>
[**(31) Why can some applications be configured as a group only?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq31)
<a name="FAQ32"></a>
[**(32) Why is the battery/network usage of NetGuard so high**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq32)
<a name="FAQ33"></a>
[**(33) Can you add profiles?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq33)
<a name="FAQ34"></a>
[**(34) Can you add the condition 'when on foreground'?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq34)
<a name="FAQ35"></a>
[**(35) Why does the VPN not start?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq35)
<a name="FAQ36"></a>
[**(36) Can you add PIN or password protection?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq36)
<a name="FAQ37"></a>
[**(37) Why are the pro features so expensive?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq37)
<a name="FAQ38"></a>
[**(38) Why did NetGuard stop running?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq38)
<a name="FAQ39"></a>
[**(39) How does a VPN based firewall differ from a iptables based firewall?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq39)
<a name="FAQ40"></a>
[**(40) Can you add schedules?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq40)
<a name="FAQ41"></a>
[**(41) Can you add wildcards?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq41)
<a name="FAQ42"></a>
[**(42) Why is permission ... needed?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq42)
<a name="FAQ43"></a>
[**(43) I get 'This app is causing your device to run slowly'**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq43)
<a name="FAQ44"></a>
[**(44) I don't get notifications on access**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq44)
<a name="FAQ45"></a>
[**(45) Does NetGuard handle incoming connections?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq45)
<a name="FAQ46"></a>
[**(46) Can I get a refund?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq46)
<a name="FAQ47"></a>
[**(47) Why are there in application advertisements?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq47)
<a name="FAQ48"></a>
[**(48) Why are some domain names blocked while they are set to be allowed?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq48)
<a name="FAQ49"></a>
[**(49) Does NetGuard encrypt my internet traffic / hide my IP address?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq49)
<a name="FAQ50"></a>
[**(50) Will NetGuard automatically start on boot?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq50)
<a name="FAQ51"></a>
[**(51) NetGuard blocks all internet traffic!**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq51)
<a name="FAQ52"></a>
[**(52) What is lockdown mode?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq52)
<a name="FAQ53"></a>
[**(53) The translation in my language is missing / incorrect / incomplete!**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq53)
<a name="FAQ54"></a>
[**(54) How to tunnel all TCP connections through the Tor network?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq54)
<a name="FAQ55"></a>
[**(55) Why does NetGuard connect to Amazon / ipinfo.io?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq55)
<a name="FAQ56"></a>
[**(56) NetGuard allows all internet traffic!**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq56)
<a name="FAQ57"></a>
[**(57) Why does NetGuard use so much data?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq57)
<a name="FAQ58"></a>
[**(58) Why does loading the application list take a long time?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq58)
<a name="FAQ59"></a>
[**(59) Can you help me restore my purchase?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq59)
<a name="FAQ60"></a>
[**(60) Why does IP (Wi-Fi) calling/SMS/MMS not work?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq60)
<a name="FAQ61"></a>
[**(61) Help, NetGuard crashed!**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq61)
<a name="FAQ62"></a>
[**(62) How can I solve 'There was a problem parsing the package' ?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq62)
<a name="FAQ63"></a>
[**(63) Why is all DNS traffic allowed?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq63)
<a name="FAQ64"></a>
[**(64) Can you add DNS over TLS?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq64)
<a name="FAQ65"></a>
[**(65) Why can NetGuard not block itself?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#user-content-faq65)
Support
-------
For questions, feature requests and bug reports, please [use this XDA-Developers forum thread](http://forum.xda-developers.com/showthread.php?t=3233012).
There is support on the latest version of NetGuard only.
There is no support on things that are not directly related to NetGuard.
There is no support on building and developing things by yourself.
**NetGuard is supported for phones and tablets only, so not for other device types like on a television or in a car.**
Contributing
------------
*Building*
Building is simple, if you install the right tools:
* [Android Studio](http://developer.android.com/sdk/)
* [Android NDK](http://developer.android.com/tools/sdk/ndk/)
The native code is built as part of the Android Studio project.
It is expected that you can solve build problems yourself, so there is no support on building.
If you cannot build yourself, there are prebuilt versions of NetGuard available [here](https://github.com/M66B/NetGuard/releases).
*Translating*
* Translations to other languages are welcomed
* You can translate online [here](https://crowdin.com/project/netguard/)
* If your language is not listed, please send a message to marcel(plus)netguard(at)faircode(dot)eu
* You can see the status of all translations [here](https://crowdin.com/project/netguard).
Please note that by contributing you agree to the license below, including the copyright, without any additional terms or conditions.
Attribution
-----------
NetGuard uses:
* [Glide](https://bumptech.github.io/glide/)
* [Android Support Library](https://developer.android.com/tools/support-library/)
License
-------
[GNU General Public License version 3](http://www.gnu.org/licenses/gpl.txt)
Copyright (c) 2015-2018 Marcel Bokhorst ([M66B](https://contact.faircode.eu/))
All rights reserved
This file is part of NetGuard.
NetGuard is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your discretion) any later version.
NetGuard is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with NetGuard. If not, see [http://www.gnu.org/licenses/](http://www.gnu.org/licenses/).
Trademarks
----------
*Android is a trademark of Google Inc. Google Play is a trademark of Google Inc*

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NetGuard/build.gradle
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// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
// http://tools.android.com/tech-docs/new-build-system/gradle-experimental
// https://bintray.com/android/android-tools/com.android.tools.build.gradle-experimental/view
// https://bintray.com/android/android-tools/com.google.gms.google-services/view
classpath 'com.android.tools.build:gradle:7.3.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
mavenCentral()
maven {
url 'https://maven.google.com'
}
}
}
subprojects {
project.configurations.all {
resolutionStrategy.eachDependency { details ->
if (details.requested.group == 'com.android.support'
&& !details.requested.name.contains('multidex')) {
details.useVersion "27.1.1"
}
}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}

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NetGuard/gradle.properties
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# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
# Default value: -Xmx10248m -XX:MaxPermSize=256m
# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
org.gradle.jvmargs=-Xmx500m
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
# http://android-developers.googleblog.com/2017/08/next-generation-dex-compiler-now-in.html
android.enableD8=true
android.useAndroidX=true
android.enableJetifier=true

164
NetGuard/gradlew
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#!/usr/bin/env bash
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS=""
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn ( ) {
echo "$*"
}
die ( ) {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
esac
# For Cygwin, ensure paths are in UNIX format before anything is touched.
if $cygwin ; then
[ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
fi
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >&-
APP_HOME="`pwd -P`"
cd "$SAVED" >&-
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin, switch paths to Windows format before running java
if $cygwin ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=$((i+1))
done
case $i in
(0) set -- ;;
(1) set -- "$args0" ;;
(2) set -- "$args0" "$args1" ;;
(3) set -- "$args0" "$args1" "$args2" ;;
(4) set -- "$args0" "$args1" "$args2" "$args3" ;;
(5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
(6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
(7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
(8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
(9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
function splitJvmOpts() {
JVM_OPTS=("$@")
}
eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

90
NetGuard/gradlew.bat
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@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS=
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto init
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto init
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:init
@rem Get command-line arguments, handling Windowz variants
if not "%OS%" == "Windows_NT" goto win9xME_args
if "%@eval[2+2]" == "4" goto 4NT_args
:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2
:win9xME_args_slurp
if "x%~1" == "x" goto execute
set CMD_LINE_ARGS=%*
goto execute
:4NT_args
@rem Get arguments from the 4NT Shell from JP Software
set CMD_LINE_ARGS=%$
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

8
NetGuard/local.properties
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## This file must *NOT* be checked into Version Control Systems,
# as it contains information specific to your local configuration.
#
# Location of the SDK. This is only used by Gradle.
# For customization when using a Version Control System, please read the
# header note.
#Tue Apr 11 12:12:18 MST 2023
sdk.dir=C\:\\Users\\shabib3\\AppData\\Local\\Android\\Sdk

1
NetGuard/settings.gradle
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include ':app'
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