With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
natInterfaceInTranslates
nat Interface In Translates
1.3.6.1.2.1.123.1.3.1.3
Number of packets received on this interface that were translated. Discontinuities in the value of this counter can occur at reinitialization of the management system and at other times as indicated by the value of ifCounterDiscontinuityTime on the relevant interface.
Back to NAT-MIB MIB page.
IPHost Network monitor allows you to monitor natInterfaceInTranslates on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.