Reply To: Using WinpkFilter to modify the payload of TCP/IP packets

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#6212

Vadim Smirnov
Moderator

payload

Correct for TCP packet, for UDP an example it would be

payload

and so on…

Is this ethernet checksum (http://folk.uio.no/od/tcp-ip-intro/subsection3_2_3.html) something which I need to care about (in addition to the length / checksum fields in the other headers)? Or is this computed automatically?

It is hardware checksum and you won’t even see it on NDIS level.