With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ctsSessionsClientAddress
cts Sessions Client Address
1.3.6.1.4.1.9.9.630.1.2.1.1.4
The Internet address of the client that requested this session. The type of this address is determined by the value of the ctsSessionClientAddressType object.
Back to CISCO-TELNET-SERVER-MIB MIB page.
IPHost Network monitor allows you to monitor ctsSessionsClientAddress on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.