CentOS7搭建telnet服务器实现远程登陆管理

ゝ一世哀愁。 2023-06-15 06:53 13阅读 0赞

## telnet服务器架设 ##

### （1）查看是否安装telnet服务器 ###

\[root@localhost ~\]\# rpm -qa|grep telnet-server

### （2）安装telnet-server ###

\[root@localhost ~\]\# yum install telnet-server

### （3）再次查看是否安装telnet-server ###

\[root@localhost ~\]\# rpm -qa |grep telnet-server

telnet-server-0.17-64.el7.x86\_64//说明已经安装了

### （4）查看是否安装xinetd服务 ###

//原因：telnet服务不是独立的服务，在xinetd服务下，有xinetd服务管理。

\[root@localhost xinetd.d\]\# rpm -qa xinetd

没反应就是成功了

### （5）安装xinetd服务 ###

\[root@localhost xinetd.d\]\# yum install xinetd

### （6）将xinetd服务和telnet服务设置为开机自启动 ###

\[root@localhost xinetd.d\]\# systemctl enable xinetd.service

\[root@localhost xinetd.d\]\# systemctl enable telnet.socket

Created symlink from /etc/systemd/system/sockets.target.wants/telnet.socket to /usr/lib/systemd/system/telnet.socket.

### （7）启动xinetd服务和telnet服务 ###

\[root@localhost xinetd.d\]\# systemctl start xinetd.service

\[root@localhost xinetd.d\]\# systemctl start telnet.socket

### （8）查看xinetd服务和telnet服务的状态（非必须步骤） ###

\[root@localhost xinetd.d\]\# systemctl status xinetd.service

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70][]

\[root@localhost xinetd.d\]\# systemctl status telnet.socket

![20191120205142106.png][]

### （9）开启root登录，通过关闭安全的方法实现 ###

\[root@localhost xinetd.d\]\# cd /etc/

\[root@localhost etc\]\# ls secure\*  
securetty

\[root@localhost etc\]\# mv securetty securetty.bak  
注：也可以securetty的末尾加上pts/0 pts/1的方法开启root登录，这样就不用关闭安全了。

### （10）配置防火墙规则 ###

\[root@localhost etc\]\# firewall-cmd --permanent --add-port=23/tcp//开放23端口

success

\[root@localhost etc\]\# firewall-cmd –reload//重新加载防火墙，使改动生效

success

### （11）测试物理机和虚拟机的互通性 ###

\[root@localhost etc\]\# ping 192.168.68.239（物理机ＩＰ）

PING 192.168.68.239 (192.168.68.239) 56(84) bytes of data.

64 bytes from 192.168.68.239: icmp\_seq=1 ttl=128 time=2.66 ms

64 bytes from 192.168.68.239: icmp\_seq=2 ttl=128 time=3.05 ms

64 bytes from 192.168.68.239: icmp\_seq=3 ttl=128 time=1.82 ms

64 bytes from 192.168.68.239: icmp\_seq=4 ttl=128 time=0.645 ms

64 bytes from 192.168.68.239: icmp\_seq=5 ttl=128 time=0.550 ms

64 bytes from 192.168.68.239: icmp\_seq=6 ttl=128 time=1.98 ms

\--- 192.168.68.239 ping statistics ---

6 packets transmitted, 6 received, 0% packet loss, time 5007ms

rtt min/avg/max/mdev = 0.550/1.787/3.055/0.937 ms

### （12）查看虚拟机Linux 机器的IP地址 ###

\[root@localhost etc\]\# ip a

192.168.190.10

### （13）在物理机windows系统中测试与Linux机器的连通性。 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70 1][]

### （14）在物理机windows中安装telnet客户端 ###

在window7以上的版本，默认没有安装telnet客户端，需要安装。安装方法如下：

a.打开控制面板

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70 2][]

b.点击程序

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70 3][]

c.启用或关闭Windwos功能，勾选上Telnet客户端点确定进行安装。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70 4][]

### （15）安装完成后打开CMD，输入Telnet IP地址。 ###

![20191120210115321.png][]

出现以下界面表示配置Telnet成功了。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70 5][]

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[20191120205142106.png]: https://img-blog.csdnimg.cn/20191120205142106.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191120205603103.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20191120205652230.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20191120205854796.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20191120205956140.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY=,size_16,color_FFFFFF,t_70
[20191120210115321.png]: https://img-blog.csdnimg.cn/20191120210115321.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY_size_16_color_FFFFFF_t_70 5]: https://img-blog.csdnimg.cn/20191120210227735.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R5d182NjY2NjY=,size_16,color_FFFFFF,t_70