linux下telnet安装与使用-睿象云平台

linux下telnet安装与使用

本站部分文章、图片属于网络上可搜索到的公开信息，均用于学习和交流用途，不能代表睿象云的观点、立场或意见。我们接受网民的监督，如发现任何违法内容或侵犯了您的权益，请第一时间联系小编邮箱jiasou666@gmail.com 处理。

linux下telnet安装与使用

yum安装telnet

yum安装简单快速

yum install telnet-server

1	yum install telnet-server

配置telnet

telnet是放在xinetd里，将disable改为yes，如下：

# 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 # 从yes改为no}

# vim /etc/xinetd.d/telnet

# default: on

# description: The telnet server serves telnet sessions; it uses \

# unencrypted username/password pairs for authentication.

servicetelnet

{

flags =REUSE

socket_type =stream

wait =no

user =root

server =/usr/sbin/in.telnetd

log_on_failure +=USERID

disable =no# 从yes改为no

}

如果需要使用root使用telnet登录，加上pts/0、pts1这样的，否则跳过这一步

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

# cat /etc/securetty | grep pts

pts/0

pts/1

pts/2

pts/3

启动telnet

# service xinetd startStarting xinetd:                                           [  OK  ]

1 2	# service xinetd start Starting xinetd: [ OK ]

确认是否启动

# netstat -lnt | grep :23tcp        0      0 :::23                       :::*                        LISTEN

1 2	# netstat -lnt \| grep :23 tcp 0 0:::23 :::* LISTEN

创建普通用户

如果已经有用户了，那么可以跳过这一步

# useradd  # 创建用户# passwd  # 修改密码Changing password for user .New password: Retype new password: passwd: all authentication tokens updated successfully.

# useradd # 创建用户

# passwd # 修改密码

Changing password foruser .

Newpassword:

Retype newpassword:

passwd:all authentication tokens updated successfully.

telnet连接测试

使用root登录

CentOS release 6.5 (Final)Kernel 3.15.4-x86_64-linode45 on an x86_64login: rootPassword:Last login: Thu Feb 12 08:37:11 from 58.246.52.46[root@li220-237 ~]#

CentOS release6.5(Final)

Kernel3.15.4-x86_64-linode45 on an x86_64

Password:

Last login:Thu Feb1208:37:11from58.246.52.46

[root@li220-237~]#

普通用户登录

CentOS release 6.5 (Final)Kernel 3.15.4-x86_64-linode45 on an x86_64login: Password:$ w 08:41:05 up 199 days, 21:57,  2 users,  load average: 0.00, 0.01, 0.05USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT    pts/1    51.241.12.49     08:40    1.00s  0.00s  0.00s wroot     pts/0    51.241.12.49     08:27    1:37   0.01s  0.01s -bash$