With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cspScActiveSessions
csp Sc Active Sessions
1.3.6.1.4.1.9.9.370.1.10.7
The number of active SSL sessions. This number indicates the number of valid session entries in the session cache.
Back to CISCO-SSL-PROXY-MIB MIB page.
IPHost Network monitor allows you to monitor cspScActiveSessions 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.