With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
natAddrPortBindMapIndex
nat Addr Port Bind Map Index
1.3.6.1.2.1.123.1.8.1.11
This object is a pointer to the natAddrMapTable entry (and the parameters of that entry) used in creating this BIND. This object, in conjunction with the ifIndex (which identifies a unique addrMapName), points to a unique entry in the natAddrMapTable.
Back to NAT-MIB MIB page.
IPHost Network monitor allows you to monitor natAddrPortBindMapIndex 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.