ADTRAN Express 4100 - Manual (Page 57)

Chapter 3. Terminal Menu Operation and Structure
61200176L2-1 Express 4100/4110 User Manual 3-7
Security Levels
Each menu item on the configuration screens has an associated security
level. The security level ranges from 0 (highest security level) to 5 (lowest
security level). This level determines whether a Telnet session can access
that menu item. The Telnet session is assigned a security level set by the
user. Passwords can only be accessed as security level 0. The maintenance
port is always at security level 0.
The security levels are assigned as follows:
Level
0 Access all parameters including passwords
1 Access all parameters except passwords
2 Access all parameters except passwords and
authentication methods
3 Access all parameters except passwords,
authentication methods, and ISDN parameters
4 Access only test and status menus
5 Access status menus only