In the past, when we had a Cisco 7200 doing NATing, we had a script someone wrote that would telnet into the router and do a " sh ip nat trans". The file would be saved out and we could parse through it at a later time, we had the script run even 10 minutes or so I believe. If that is what you are looking for, I can try and dig up the script we had for this. -Mike -----Original Message----- From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of Pavel Dimow Sent: Thursday, May 08, 2014 11:20 AM To: NANOG Subject: NAT (PAT) log Hello, as we are running out of ipv4 addresses we started to think of dual stack deployment in our network and that means we will soon need to have some NAT in place (NAT44).However I am curios to find how do you manage NAT logs? Considering the fact that we will need to use overload for pools I don't see any good solution how to track ip address leases. Any ideas?