With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
authUserProfileName
Authentication User Profile Name
1.3.6.1.4.1.2.6.119.7.2.1.2.1.1
For ppp user, it is the name of the user. For tunnel connection definition, it is the host name of the remote tunnel end point.
Back to ibm-ibmauth MIB page.
IPHost Network monitor allows you to monitor authUserProfileName on IBM device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring IBM Blade servers right now.