Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Monitoring traffic through the ASA

I have been using NetFlow to monitor incoming and outgoing traffic on my Cisco 1841 router. The 1841 router is just an edge router but my ASA 5510 is my firewall and where my remote site's VPN connection start and end. I've been seeing some high traffic on my router and since most of it's encrypted I can't tell who is causing all the traffic issues (actual source IP). I know the ASA doesn't support netflow so I wanted to see what other options I have to look more deeply at the traffic going through that device, unencrypted.



Re: Monitoring traffic through the ASA

you can log to a syslog server / to the ASDM itself.

Try Kiwi's syslog server which is free for 5 clients.

Check the options under ASDM, logging.

choose the level of logging you want.


Re: Monitoring traffic through the ASA

Do you have an internal router that you could enable netflow on?

New Member

Re: Monitoring traffic through the ASA

No, just a Cisco 3560 switch, which doesn't support Netflow.