H3C Technologies H3C S12500 Series Switches - Manual (Page 66)

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To configure supported protocols on VTY user interfaces:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter VTY user interface view.
user-interface { first-num1
[ last-num1 ] | vty first-num2
[ last-num2 ] }
N/A
3. Configure the supported
protocols on the current user
interface.
protocol inbound { all | ssh |
telnet }
Optional.
By default, both Telnet and SSH
are supported.
The specified protocols take effect
the next time you log in through
that user interface.
Configuring authentication mode
Authentication mode under a user interface determines whether to authenticate users that are logging in
through the user interface. The switch supports the following authentication modes:
• None—Requires no authentication. This mode is insecure.
• Password—Requires password authentication. If your password was lost, see H3C Series Ethernet
Switches Login Password Recovery Manual for password recovery.
• Scheme—Uses the AAA module to provide local or remote console login authentication. You must
provide a username and password for accessing the CLI. If the password configured in the local
user database was lost, see H3C Series Ethernet Switches Login Password Recovery Manual for
password recovery. If the username or password configured on a remote server was lost, contact the
server administrator for help.
To improve switch security, configure the password or scheme authentication mode immediately after you
log in to the switch for the first time.
For more information about user authentication modes and parameters, see Security Configuration
Guide. By default, the switch performs local authentication on users. If you log in through SSH, the rules
apply to password authentication only. For more information about SSH, see Security Configuration
Guide.
To configure the authentication mode as none:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter user interface view.
user-interface { first-num1
[ last-num1 ] | { aux | console |
vty } first-num2 [ last-num2 ] }
N/A
3. Enable the none
authentication mode.
authentication-mode none
The default is password for VTY
and AUX logins and none for
console login.
To configure the authentication mode as password: