linux centos7部署telnet_centos7安装telnet客户端

一、xinetd安装

telnet服务依赖于xinetd服务，所以需要首先安装xinetd服务

查看服务器是否安装有xinetd，如果已安装则进行下一步，没有则先安装xinetd服务

[root@localhost ~]# rpm -qa|grep xinetd
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1、下载上传xinetd安装包

[root@localhost ~]# xinetd-2.3.15-14.el7.x86_64.rpm
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2、安装xinetd服务

[root@localhost ~]# rpm -ivh xinetd-2.3.15-14.el7.x86_64.rpm
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3、启动xinetd服务

[root@localhost ~]# systemctl start xinetd.service
[root@localhost ~]# systemctl stauts xinetd.service
● xinetd.service - Xinetd A Powerful Replacement For Inetd
   Loaded: loaded (/usr/lib/systemd/system/xinetd.service; enabled; vendor preset: enabled)
   Active: active (running) since Thu 2022-12-29 10:32:23 CST; 2 months 14 days ago
 Main PID: 28743 (xinetd)
    Tasks: 1
   CGroup: /system.slice/xinetd.service
           └─28743 /usr/sbin/xinetd -stayalive -pidfile /var/run/xinetd.pid
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二、telnet安装

1、下载上传telnet安装包

[root@localhost ~]# telnet-0.17-65.el7_8.x86_64.rpm
[root@localhost ~]# telnet-server-0.17-65.el7_8.x86_64.rpm
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第一个为telnet客户端安装包，第二个为真正的telnet服务安装包

2、安装telnet服务

[root@localhost ~]# rpm -ivh telnet-0.17-65.el7_8.x86_64.rpm
[root@localhost ~]# rpm -ivh telnet-server-0.17-65.el7_8.x86_64.rpm
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3、启动telnet服务

[root@localhost ~]# systemctl start telnet.socket
[root@localhost ~]# systemctl enables telnet.socket  \\设置自启动
[root@localhost ~]# systemctl status telnet.socket
● telnet.socket - Telnet Server Activation Socket
   Loaded: loaded (/usr/lib/systemd/system/telnet.socket; enabled; vendor preset: disabled)
   Active: active (listening) since Tue 2023-03-14 16:39:56 CST; 23s ago
     Docs: man:telnetd(8)
   Listen: [::]:23 (Stream)
 Accepted: 4; Connected: 0
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三、检查防火墙

1、检查系统默认防火墙，如果未关闭系统防火墙，需关闭

[root@itkcpt ~]# systemctl status firewalld
● firewalld.service
   Loaded: masked (/dev/null; bad)
   Active: inactive (dead)
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2、配置iptables，放通telnet需要的23端口

至此部署完成