With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cvpdnTunnelSessionPacketsOut
cvpdn Tunnel Session Packets Out
1.3.6.1.4.1.9.10.24.1.3.1.1.5
The total number of output packets through this active user session.
Back to CISCO-VPDN-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cvpdnTunnelSessionPacketsOut 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.