With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
natAddrMapProtocol
nat Addr Map Protocol
1.3.6.1.2.1.123.1.4.1.15
This object specifies a bitmap of protocol identifiers.
Back to NAT-MIB MIB page.
IPHost Network monitor allows you to monitor natAddrMapProtocol 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.