Upload files to 'Test_Cases/Test_Case3'

Test_Cases/Test_Case3/TestCase3_ACK.py

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+import socket
+
+# Sending a ACK packet 
+
+def init_socket():
+    s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)
+    s.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
+    return s    
+
+def send_raw_packet():
+    ip_header  = b'\x45\x00\x00\x28'  # Version, IHL, Type of Service | Total Length
+    ip_header += b'\x00\x03\x00\x00'  # Identification | Flags, Fragment Offset
+    ip_header += b'\x28\x06\xa6\xec'  # TTL = 40s, Protocol = 6 for TCP | Header Checksum
+    ip_header += b'\xac\xa8\x05\x03'  # Source Address: 172.168.5.3 
+    ip_header += b'\xac\xa8\x05\x04'  # Destination Address: 172.168.5.4
+
+    tcp_header  = b'\x15\xb3\x1a\x0a' # Source Port | Destination Port
+    tcp_header += b'\x00\x00\x00\x00' # Sequence Number
+    tcp_header += b'\x00\x00\x00\x00' # Acknowledgement Number
+    tcp_header += b'\x50\x10\x00\x00' # Data Offset, Reserved, Flags | Window Size
+    tcp_header += b'\xe6\x32\x00\x00' # Checksum | Urgent Pointer
+
+    packet = ip_header + tcp_header
+    return packet
+
+if __name__=="__main__":
+    dst_IP = '172.168.5.4'
+
+    s = init_socket()
+
+    packet = send_raw_packet()
+    s.sendto(packet, (dst_IP, 0))

Test_Cases/Test_Case3/TestCase3_FIN.py

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+import socket
+
+# Sending a FIN packet 
+
+def init_socket():
+    s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)
+    s.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
+    return s    
+
+def send_raw_packet():
+    ip_header  = b'\x45\x00\x00\x28'  # Version, IHL, Type of Service | Total Length
+    ip_header += b'\x00\x03\x00\x00'  # Identification | Flags, Fragment Offset
+    ip_header += b'\x28\x06\xa6\xec'  # TTL = 40s, Protocol = 6 for TCP | Header Checksum
+    ip_header += b'\xac\xa8\x05\x03'  # Source Address: 172.168.5.3 
+    ip_header += b'\xac\xa8\x05\x04'  # Destination Address: 172.168.5.4
+
+    tcp_header  = b'\x15\xb3\x1a\x0a' # Source Port | Destination Port
+    tcp_header += b'\x00\x00\x00\x00' # Sequence Number
+    tcp_header += b'\x00\x00\x00\x00' # Acknowledgement Number
+    tcp_header += b'\x50\x01\x00\x00' # Data Offset, Reserved, Flags | Window Size
+    tcp_header += b'\xe6\x32\x00\x00' # Checksum | Urgent Pointer
+
+    packet = ip_header + tcp_header
+    return packet
+
+if __name__=="__main__":
+    dst_IP = '172.168.5.4'
+
+    s = init_socket()
+
+    packet = send_raw_packet()
+    s.sendto(packet, (dst_IP, 0))

Test_Cases/Test_Case3/TestCase3_FINACK.py

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+import socket
+
+# Sending a FIN+ACK packet 
+
+def init_socket():
+    s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)
+    s.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
+    return s    
+
+def send_raw_packet():
+    ip_header  = b'\x45\x00\x00\x28'  # Version, IHL, Type of Service | Total Length
+    ip_header += b'\x00\x03\x00\x00'  # Identification | Flags, Fragment Offset
+    ip_header += b'\x28\x06\xa6\xec'  # TTL = 40s, Protocol = 6 for TCP | Header Checksum
+    ip_header += b'\xac\xa8\x05\x04'  # Source Address: 172.168.5.4
+    ip_header += b'\xac\xa8\x05\x03'  # Destination Address: 172.168.5.3 
+
+    tcp_header  = b'\x1a\x0a\x15\xb3' # Source Port | Destination Port
+    tcp_header += b'\x00\x00\x00\x00' # Sequence Number
+    tcp_header += b'\x00\x00\x00\x00' # Acknowledgement Number
+    tcp_header += b'\x50\x11\x00\x00' # Data Offset, Reserved, Flags | Window Size
+    tcp_header += b'\xe6\x32\x00\x00' # Checksum | Urgent Pointer
+
+    packet = ip_header + tcp_header
+    return packet
+
+if __name__=="__main__":
+    dst_IP = '172.168.5.3'
+
+    s = init_socket()
+
+    packet = send_raw_packet()
+    s.sendto(packet, (dst_IP, 0))

Test_Cases/Test_Case3/TestCase3_SYN.py

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+import socket
+
+# Sending a SYN packet 
+
+def init_socket():
+    s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)
+    s.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
+    return s    
+
+def send_raw_packet():
+    ip_header  = b'\x45\x00\x00\x28'  # Version, IHL, Type of Service | Total Length
+    ip_header += b'\x00\x03\x00\x00'  # Identification | Flags, Fragment Offset
+    ip_header += b'\x28\x06\xa6\xec'  # TTL = 40s, Protocol = 6 for TCP | Header Checksum
+    ip_header += b'\xac\xa8\x05\x03'  # Source Address: 172.168.5.3 
+    ip_header += b'\xac\xa8\x05\x04'  # Destination Address: 172.168.5.4
+
+    tcp_header  = b'\x15\xb3\x1a\x0a' # Source Port | Destination Port
+    tcp_header += b'\x00\x00\x00\x00' # Sequence Number
+    tcp_header += b'\x00\x00\x00\x00' # Acknowledgement Number
+    tcp_header += b'\x50\x02\x00\x00' # Data Offset, Reserved, Flags | Window Size
+    tcp_header += b'\xe6\x32\x00\x00' # Checksum | Urgent Pointer
+
+    packet = ip_header + tcp_header
+    return packet
+
+if __name__=="__main__":
+    dst_IP = '172.168.5.4'
+
+    s = init_socket()
+
+    packet = send_raw_packet()
+    s.sendto(packet, (dst_IP, 0))

Test_Cases/Test_Case3/TestCase3_SYNACK.py

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+import socket
+
+# Sending a SYN+ACK packet 
+
+def init_socket():
+    s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)
+    s.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
+    return s    
+
+def send_raw_packet():
+    ip_header  = b'\x45\x00\x00\x28'  # Version, IHL, Type of Service | Total Length
+    ip_header += b'\x00\x03\x00\x00'  # Identification | Flags, Fragment Offset
+    ip_header += b'\x28\x06\xa6\xec'  # TTL = 40s, Protocol = 6 for TCP | Header Checksum
+    ip_header += b'\xac\xa8\x05\x04'  # Source Address: 172.168.5.4
+    ip_header += b'\xac\xa8\x05\x03'  # Destination Address: 172.168.5.3 
+
+    tcp_header  = b'\x1a\x0a\x15\xb3' # Source Port | Destination Port
+    tcp_header += b'\x00\x00\x00\x00' # Sequence Number
+    tcp_header += b'\x00\x00\x00\x00' # Acknowledgement Number
+    tcp_header += b'\x50\x12\x00\x00' # Data Offset, Reserved, Flags | Window Size
+    tcp_header += b'\xe6\x32\x00\x00' # Checksum | Urgent Pointer
+
+    packet = ip_header + tcp_header
+    return packet
+
+if __name__=="__main__":
+    dst_IP = '172.168.5.3'
+
+    s = init_socket()
+
+    packet = send_raw_packet()
+    s.sendto(packet, (dst_IP, 0))