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Andrew White
Explorer

Show NAT translations on ASA?

Hello,

 

Our ISP has given us Netflow access and we can see what the ISP Cisco router is sending and receiving, this is great but as a source or destination I only see our 'outside' public IP. I understand this is normal, but is there a way I can see what the ASA is translating this to in the inside?

 

So it will normally show something like:

 

Source = ASA publicIP destination = website publicIP port= 443

 

I wondered if I new some of the data I can somehow find out what this is on the inside?

Thanks

3 REPLIES 3
ngkin2010
Enthusiast

Does "show xlate" help you for this case? I think you could view the real time PAT translation by this command.

 

But I am not sure how could you view the historical translation record if you are looking for historical Netflow data. 

Thanks, it’s just I’ve noticed 50gb was downloaded from a particular site to the outside IP address that’s all.

I think I will have to enable netflow on the inside ASA interface and see what that might show moving forward.

This is correct you need to enable net flow on the inside network in order to check what ip addresses are sending and receiving data. 

 

Check this his link for configuration guide example how to setup 

https://community.cisco.com/t5/security-documents/netflow-on-asa/ta-p/3119176

 

 

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