Paradyne FrameSaver DSL 9783 CSU/DSU, Руководство пользователя, Страница: 91 / 233

Security and Logins
5-5
9783-A2-GB20-00 July 2000
Limiting Telnet Access
Telnet access can be limited by:
H
Disabling Telnet access completely.
H
Requiring a login for Telnet sessions that are not on the TS Management
Link.
H
Assigning an access level for Telnet sessions.
H
Disabling TS Management Link access.
To limit Telnet access via a service provider’s troubleshooting management link,
see
Limiting Telnet or FTP Access Over the TS Management Link .
"
Procedure
To limit Telnet access when the session is not on the TS Management Link:
1. Select the Telnet and FTP Session options.
Main Menu
→
Configuration
→
Management and Communication
→
Telnet and FTP Sessions
2. Set the following configuration options, as appropriate.
To . . . Set the configuration option . . .
Disable Telnet access Telnet Session to Disable.
Require a login Login Required to Enable.
NOTE: User ID and password combinations
must be defined. See
Creating a Login
.
Assign an access level Session Access Level to Level-2 or Level-3.
NOTE: Regardless of a user’s login access
level, a user cannot operate at a level higher
than the access level specified for the Telnet
session (e.g., if a user has a Level-1 login and
Level-2 telnet access has been set, the
Level-1 user can only operate as a Level-2
user).
If you are going to allow users to configure the
unit, keep the access at Level-1.
3. Save your changes.
See Configuring Telnet and/or FTP Session Support in Chapter 4, Configuration
Options, for more information about setting Telnet configuration options.