With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ctsiIfAuthenticationNoResponse
ctsi If Authentication No Response
1.3.6.1.4.1.9.9.740.1.6.1.1.4
The number of times that no authentication respond received from the remote peer associated with this interface.
Back to CISCO-TRUSTSEC-INTERFACE-MIB MIB page.
IPHost Network monitor allows you to monitor ctsiIfAuthenticationNoResponse 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.