With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cafPortPreAuthOpenAccess
Cisco Authentication Framework Port Pre Authentication Open Access
1.3.6.1.4.1.9.9.656.1.2.1.1.4
Specifies if the Pre-Authentication Open Access feature allows clients/devices to gain network access before authentication is performed. A value of 'true' for this object indicates that client/device is able to gain network access before authentication is performed.
Back to CISCO-AUTH-FRAMEWORK-MIB MIB page.
IPHost Network monitor allows you to monitor cafPortPreAuthOpenAccess on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.