With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ceipSecEndPtHistRemotePort
Cisco Enhanced IP Sec End Port History Remote Port
1.3.6.1.4.1.9.9.432.1.2.3.1.19
The port number of the remote Endpoint's traffic.
Back to CISCO-ENHANCED-IPSEC-FLOW-MIB MIB page.
IPHost Network monitor allows you to monitor ceipSecEndPtHistRemotePort on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.