With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alGeneralGaugeActiveSessions
ALTIGA General Gauge Active Sessions
1.3.6.1.4.1.3076.2.1.2.25.1.3
The value of the Active Sessions gauge which indicates the percentage of total permitted session that are active.
Back to ALTIGA-GENERAL-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alGeneralGaugeActiveSessions 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.