TCP Header Checksums Displayed as Corrupted (using Network Monitor)
OK,so I was troubleshooting and odd issue with an FTP server and one of the thingsthat caught my attention while using Network Monitor (on a Windows 2000 server)was that some(actually almost all) of the TCP checksums (originating from the server)were found to be incorrect. At first I thought I was having a networking problem,yet someone pointed out the fact that since the calculation was being offloaded to the NIC Network Monitor may be calculating the checksums incorrectly. http://support.microsoft.com/kb/243294