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Cisco ASA 5510 - Monitor Port Traffic

Posted on 2009-04-15
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How can I monitor port 25 traffic on my ASA 5510?
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Question by:bschwarting
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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 192.168.2.1

that will show everything in the capture with IP 192.168.2.1

hope this helps someone in the future!
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