Telnet installation and use under Linux

Now management Linux Basic with CRT, Xshell or putty, there is no one with Telnet, because the subsequent need to talk about Zabbix-free client-side monitoring only Telnet, through Telnet to monitor server performance.

Yum Install Telnet

Yum installation is quick and easy

1	Yum install telnet-server

Configure Telnet

Telnet is placed in the xinetd, change disable to Yes, as follows:

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# vim/etc/xinetd.d/telnet# Default:on# description:the Telnet Server serves Telnet sessions; it uses \# unencrypted Username/password pairs for authentication.service telnet { flags = reuse socket_type = stream wait = no user = root server = /usr/sbin/in. telnetd log_on_failure + = USERID Disable = no # change from Yes to no }

If you need to log in with root using Telnet, add pts/0, Pts1, or skip this step

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# Cat/etc/securetty | grep pts pts/0 pts/1 pts/2 pts/3

Start Telnet

12	# service xinetd start starting xinetd: [ OK ]

Confirm whether to start

12	# netstat-lnt | grep:23 tcp        0      0 :::23                         :::*                          listen

Create a normal user

If you already have a user, you can skip this step

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# useradd Ttlsa # Create user# passwd Ttlsa # Change Passwordchanging password for user Ttlsa. New password: Retype new password: passwd: All authentication tokens updated successfully.

Telnet connection test

Log in with Root

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CentOS Release 6.5 (Final) Kernel 3.15.4-x86_64-linode45 on an x86_64 login: root Password: last login: Thu Feb: panax notoginseng : from 58.246.52.46 [root@li220-237 ~]#

Normal User Login

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CentOS Release 6.5 (Final) Kernel 3.15.4-x86_64-linode45 on an x86_64 login: ttlsa Password: $ w 08:41:05 up 199 days 21:57,  2 users,  load Span class= "crayon-v" >average: 0.00, 0.01 0.05 user     TTY       from               LOGIN @   idle   jcpu   PCPU what ttlsa    pts /1    51.241.12.49     08< Span class= "Crayon-o" >:40    1.00s  0.00s  0.00s w Root pts/0 51.241.12.49 : 1:PNS c16>0.01s 0.01s -bash $

Telnet installation and use under Linux