With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cProxyCallActiveRemoteIPAddress
Cisco Proxy Call Active Remote IP Address
1.3.6.1.4.1.9.10.57.1.1.1.1.2
Remote system IP address for the call.
Back to CISCO-PROXY-CONTROL-MIB MIB page.
IPHost Network monitor allows you to monitor cProxyCallActiveRemoteIPAddress 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.