linux - 安装 telnet-server

linux - 安装 telnet-server

安装 telnet-server 服务端

yum install -y telnet-server

安装 telnet 客户端

yum install -y telnet-server

启动 telent-server

# 启动 telnet-server
systemctl  start telnet.socket

# 开机启动
systemctl  enable  telnet.socket

# 状态
systemctl  status  telnet.socket

# 配置
cat /usr/lib/systemd/system/telnet.socket
[Unit]
Description=Telnet Server Activation Socket
Documentation=man:telnetd(8)

[Socket]
ListenStream=23
Accept=true

[Install]
WantedBy=sockets.target


# 防火墙规则
firewall-cmd  --zone=public  --add-port=23/tcp --permanent

查看23 端口是否启动

[[email protected] ~]# lsof -i:23
COMMAND PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
systemd   1 root   29u  IPv6 109628      0t0  TCP *:telnet (LISTEN)

客户端连接

[[email protected] ~]:~$ telnet 192.168.1.15 22
Trying 192.168.1.15...
Connected to 192.168.1.15.
Escape character is '^]'.
SSH-2.0-OpenSSH_7.4
^]
telnet> quit    # 按 ctrl + ] 进入交互
Connection closed.