Linux Centos7下安装telnet服务

1. 查看是否已经安装telnet

[[email protected] ~]$ rpm -qa telnet-server
[[email protected] ~]$ rpm -qa xinetd

2. 安装telnet

1. 查找yun列表

[[email protected] ~]$ yum list |grep telnet
telnet.x86_64                               1:0.17-64.el7              base     
telnet-server.x86_64                        1:0.17-64.el7              base     
[[email protected] ~]$ yum list |grep xinetd
xinetd.x86_64                               2:2.3.15-13.el7            base 

telnet.x86_64：这个软件包提供的是 telnet 客户端程序
telnet-server.x86_64：软件包，这个才是真正的 Telnet server 软件包。
xinetd.x86_64：telnet-server服务启动依赖xinetd服务，需要首先安装，如果telnet-server服务在xinetd之前安装了，要先删除telnet-server，再安装xinetd

2. 安装

[[email protected] ~]$ sudo yum -y install xinetd.x86_64
[[email protected] ~]$ sudo yum -y install telnet.x86_64
[[email protected] ~]$ sudo yum -y install telnet-server.x86_64

3. 检查是否安装成功

[[email protected] ~]$ rpm -qa | grep telnet
telnet-0.17-64.el7.x86_64
telnet-server-0.17-64.el7.x86_64
[[email protected] ~]$ rpm -qa | grep xinetd
xinetd-2.3.15-13.el7.x86_64

3. 启动

[[email protected] ~]$ systemctl start telnet.socket
[[email protected] ~]$ systemctl start xinetd

4. 设置开机自启

[[email protected] ~]$ systemctl enable telnet.socket
[[email protected] ~]$ systemctl enable xinetd.service

5. 验证

[[email protected] apps]$ telnet 10.10.10.10 8080
Trying 10.10.10.10...
Connected to 10.10.10.10.
Escape character is '^]'.

完美！