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@ -27,3 +27,7 @@ For the FIN+ACK packet, the FIN and ACK flags in the header have a value of 1. |
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18. TCP Checksum = initially zero, then: |
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(i) Concatenate TCP Pseudo header (Protocol, Source IP, Destination IP, Total Length) with TCP header and TCP data. This creates a big integer. |
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(ii) Convert this integer to binary and compute bit wise 1's complement. |
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References: |
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1. https://www.thegeekstuff.com/2012/05/ip-header-checksum/ |
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2. https://www.tutorialspoint.com/calculation-of-tcp-checksum |
