With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cspTcConnEstab
csp Tc Connection Estab
1.3.6.1.4.1.9.9.370.1.8.3
The total number of TCP connections established.
Back to CISCO-SSL-PROXY-MIB MIB page.
IPHost Network monitor allows you to monitor cspTcConnEstab on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.