Hey bro,
Just thought of something. IF you want to block local users from connecting, you can run blockSFAInternalUsers command from fw expert mode to see what it shows, just add -s flag and it would show you how to block it if you want.
Andy
[Expert@R82:0]# blockSFAInternalUsers
Internal User, Single Factor Auth. Blocking Utility
Usage: blockSFAInternalUsers [flags]
-s show current status
-a allow internal users with password single factor to authenticate
-b block internal users with password single factor from authenticating
[Expert@R82:0]# blockSFAInternalUsers -s
blockSFAInternalUsers: Allowed
[Expert@R82:0]#