3Com WX3000 Telnet Configuration with Authentication Mode Being None, Configuration Procedure

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.

zIf the authentication mode is none, TCP 23 will be enabled, and TCP 22 will be disabled.

zIf the authentication mode is password, and the corresponding password has been set, TCP 23 will be enabled, and TCP 22 will be disabled.

zIf 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 perform Telnet configuration with the authentication mode being none:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enter one or more VTY user	user-interface vty
	first-number	—
interface views
	[ last-number ]
Configure not to authenticate	authentication-mode	Required
users logging in to VTY user		By default, VTY users are authenticated
	none
interfaces		after logging in.
Configure the command level		Optional
	user privilege level	By default, commands of level 0 are
available to users logging in to
	level	available to users logging in to VTY
VTY user interface
		user interfaces.
Configure the protocols to be	protocol inbound { all	Optional
supported by the VTY user		By default, both Telnet protocol and
	ssh telnet }
interface		SSH protocol are supported.
Set the commands to be		Optional
executed automatically after a	auto-execute	By default, no command is executed
user login to the user interface	command text	automatically after a user logs in to the
successfully		VTY user interface.
Make terminal services		Optional
	shell	By default, terminal services are
available
		available in all user interfaces.
		Optional
Set the maximum number of		By default, the screen can contain up to
	screen-length	24 lines.
lines the screen can contain	screen-length	You can use the screen-length0
		command to disable the function to
		display information in pages.
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