Ethereal-users: [Ethereal-users] Ethereal version 0.9.14 - TCP message showing wrong FCS

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From: "Padmanabha Kamath" <padmanabha.kamath@xxxxxxxxxxxxx>
Date: Fri, 09 Jul 2004 16:41:06 -0500
Ethereal version - 0.9.14 
WinPCap version  - 3.0

I am attaching an Ethereal log showing that all the packets from my 
test machine to the server(external machine) are shown as having an 
incorrect checksum (transport and network layer only) ONLY when I am 
observing the traffic with Ethereal installed on the test machine.

I have reproduced this phenomenon on several PCs. 

I tried monitoring the test machine externally via a hub to which I 
attached my test machine and an external machine and monitored the 
traffic with ethereal installed on the external machine. The packets to 
and from the test machine now seemed to have the correct checksum.

If anyone seems to have a clue or observed a similar phenomenon, please 
email.

Thanks in advance,
Kamath.

Attachment: Ethereal.log
Description: Binary data