With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alpsRemPeerState
Cisco's Airline protocol support Remote Peer State
1.3.6.1.4.1.9.9.95.1.2.2.1.5
TCP Peer State. Initially the connection is in the closed state. For permanent connections, it starts opening the TCP connection immediately, but for dynamic ones, it waits till there is traffic addressed to the remote peer. It then progresses via opening into the opened state.
Back to CISCO-ALPS-MIB MIB page.
IPHost Network monitor allows you to monitor alpsRemPeerState 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.