Wireshark-users: Re: [Wireshark-users] Traffic bewteen two IP addresses
From: Jeff Morriss <jeff.morriss.ws@xxxxxxxxx>
Date: Thu, 28 Aug 2008 18:15:44 -0400

Bryan Carter wrote:
This one is just getting away from me and I can’t get my head around it, and I cannot find an example anywhere.
I have WireShark running on a SPAN port that is watching several ports 
on a Cisco switch. I simply want a capture filter that will allow me to 
see ALL of the traffic between two SPECIFIC ip addresses.  So I ONLY 
want to see traffic from IP1, IF it is going to, or coming from IP2.  
What would that CAPTURE filter look like?
host IP1 and host IP2

should work.