With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
natAddrBindTable
nat Addr Bind Table
1.3.6.1.2.1.123.1.6
This table holds information about the currently active NAT BINDs.
Back to NAT-MIB MIB page.
IPHost Network monitor allows you to monitor natAddrBindTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.