With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cssgStatsLoginAttempts
cssg Stats Login Attempts
1.3.6.1.4.1.9.9.260.1.2.1
The number of login attempts onto SSG.
Back to CISCO-SSG-MIB MIB page.
IPHost Network monitor allows you to monitor cssgStatsLoginAttempts 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.