With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cfwNetEventInsideDstIpPort
Cisco Firewall Net Event Inside Dst Ip Port
1.3.6.1.4.1.9.9.147.1.1.2.2.1.10
Destination UDP/TCP port after Port Address Translation has been applied. If PAT has not been applied to the Destination port in this packet this object will not be instantiated, resulting in a sparse table. If the event is the result of multiple packets with different destination ports, this value may be zero or a port taken from an arbitrarily chosen packet in the sequence of packets causing the event.
Back to CISCO-FIREWALL-MIB MIB page.
IPHost Network monitor allows you to monitor cfwNetEventInsideDstIpPort on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.