Cisco ASA 5510 - Monitor Port Traffic

Posted on 2009-04-15
Medium Priority
Last Modified: 2013-11-16
How can I monitor port 25 traffic on my ASA 5510?
Question by:bschwarting
1 Comment

Accepted Solution

bschwarting earned 0 total points
ID: 24151636
add these to your ASA:
access-list filtermail permit tcp any any eq 25
capture filtermail access-list filtermail interface inside.

Then you can do "show capture filtermail", and it will show all of the
packets going on the inside interface on port 25.

"clear capture filtermail" will clear the capture buffer.

then add a no to each command to remove the capture:
no access-list filtermail permit tcp any any eq 25
no capture filtermail access-list filtermail interface inside

you can also search the capture by doing:
show capture filtermail | include

that will show everything in the capture with IP

hope this helps someone in the future!

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