With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cseL3ActiveFlows
CISCO SWITCH ENGINE L3 Active Flows
1.3.6.1.4.1.9.9.97.1.4.1.1.5
Number of active flows in the Layer 3 flow table of this switching engine.
Back to CISCO-SWITCH-ENGINE-MIB MIB page.
IPHost Network monitor allows you to monitor cseL3ActiveFlows 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.
