Wireshark-users: Re: [Wireshark-users] Disable TCP_CHECKSUM_INCORRECT
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From: Sake Blok <sake@xxxxxxxxxx>
Date: Mon, 21 Jan 2008 17:09:44 +0100
On Mon, Jan 21, 2008 at 04:57:01PM +0100, Fr?d?ric BERNON wrote:
> 
> My problem is to be able to use "Analyze\Expert info" without having 
> "TCP bad checksum" errors. Else, I can't see real problems I want to 
> analyze (retransmissions, dup ack...). The "Severity filter" can't 
> help me: what I need is finally to say to wireshark that all "tcp 
> checksums errors" are not errors.
> 
> Is it possible (without patching the code)?

Yes, go to "Edit | Preferences" and then click on "Protocols". Search for 
TCP in the protocol list and deselect "Validate the TCP checksum if possible"

Now your expert analysis should be free from TCP checksum errors :-)

Hope this helps,
Cheers,
   Sake