FAQ

What is the packet capture filter I should use for Yahoo Messenger IM?

FAQ ID:    FAQ1499
Version:    1.0
Status:    Published
Published date:    08/11/2011
 

Answer

The following example uses the Yahoo subnet IP as the filter; the Yahoo Messenger server IP that you connect to is dynamically assigned from this pool.

ip host A.A.A.A or net 98.139.0.0 mask 255.255.0.0 or net 98.136.0.0 mask 255.255.0.0 or net 215.155.194.0 mask 255.255.255.0 or port 53

where, you must replace A.A.A.A with the client IP.

The command above captures the Yahoo Messenger traffic as long as there is no WCCP GRE encapsulation or no VLAN tagging.


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