With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alActiveSessionSubEntryTcpSrcPort
ALTIGA Active Session Sub Entry Tcp Source Port
1.3.6.1.4.1.3076.2.1.2.17.6.1.29
The TCP Source port used by IKE/IPSec for this connection to permit access through a firewall.
Back to ALTIGA-SESSION-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alActiveSessionSubEntryTcpSrcPort 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.
