Tuesday, August 11, 2009

Router ( cont. ) - Telnet

Definition

Telnet (teletype network) is a network protocol used on the Internet or local area networks to provide a bidirectional interactive communications facility. Typically, telnet provides access to a command-line interface on a remote host via a virtual terminal connection which consists of an 8-bit byte oriented data connection over the Transmission Control Protocol (TCP). User data is interspersed in-band with TELNET control information. The term telnet may also refer to the software that implements the client part of the protocol. Telnet client applications are available for virtually all computer platforms. Most network equipment and operating system with a TCP/IP stack support a Telnet service for remote configuration (including systems based on Windows NT). Because of security issues with Telnet, its use has waned in favor of SSH for remote access.

For more info, please visit Wikipedia.

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Configure Telnet

To use Telnet, you must 1st set the router.
Click here to see how to set 2 router.

After set all router, now you need to setup for Telnet.

Router>enable
Router#conf t
Router(config)#line vty 0 ? // to check how many lines we have

Router(config)#line vty 0 5
Router(config-line)#
Router(config-line)#password cisco // cisco is the password

Telnet Using Another Router

Router>enable
Router#telnet (ip addr)

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