With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ceipSecTunSaInAuthFails
Cisco Enhanced IP Sec Tunnel Security Association In Authentication Fails
1.3.6.1.4.1.9.9.432.1.1.5.1.12
The total number of inbound authentication's which ended in failure by using this SA.
Back to CISCO-ENHANCED-IPSEC-FLOW-MIB MIB page.
IPHost Network monitor allows you to monitor ceipSecTunSaInAuthFails 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.