Telnet Configuration With Authentication Mode Being None; Configuration Procedure - H3C S5600 Series Operation Manual

Authentication mode
To improve security and prevent attacks to the unused Sockets, TCP 23 and TCP 22, ports for Telnet
and SSH services respectively, will be enabled or disabled after corresponding configurations.
If the authentication mode is none, TCP 23 will be enabled, and TCP 22 will be disabled.
If the authentication mode is password, and the corresponding password has been set, TCP 23
will be enabled, and TCP 22 will be disabled.
If the authentication mode is scheme, there are three scenarios: when the supported protocol is
specified as telnet, TCP 23 will be enabled; when the supported protocol is specified as ssh, TCP
22 will be enabled; when the supported protocol is specified as all, both the TCP 23 and TCP 22
port will be enabled.

Telnet Configuration with Authentication Mode Being None

Configuration Procedure

Follow these steps to configure Telnet with the authentication mode being none:
To do...
Enter system view
Enter one or more VTY user
interface views
Configure not to authenticate users
logging in to VTY user interfaces
Configure the command level
available to users logging in to VTY
user interface
Configure the protocols to be
supported by the VTY user
interface
Set the commands to be executed
automatically after a user login to
the user interface successfully
Make terminal services available
Telnet configuration
Perform common Perform common Telnet
configuration configuration
Use the command...
system-view
user-interface vty first-number
[ last-number ]
authentication-mode none
user privilege level level
protocol inbound { all | ssh |
telnet }
auto-execute command text
shell
3-3
Description
Optional
Refer to Table 3-2.
Remarks
—
—
Required
By default, VTY users are
authenticated after logging in.
Optional
By default, commands of level 0 are
available to users logging in to VTY
user interfaces.
Optional
By default, both Telnet protocol and
SSH protocol are supported.
Optional
By default, no command is executed
automatically after a user logs into the
VTY user interface.
Optional
By default, terminal services are
available in all user interfaces.