With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cnatSessionTable
cnat Session Table
1.3.6.1.4.1.9.10.77.1.2.5
The (conceptual) table containing one entry for each NAT session currently active on this NAT device.
Back to CISCO-IETF-NAT-MIB MIB page.
IPHost Network monitor allows you to monitor cnatSessionTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.
