linux安装telnet

1.安装telnet

yum install telnet telnet-server xinetd -y

2.启动telnet

systemctl start telnet.socket
systemctl enable telnet.socket

3.添加防火墙配置

firewall-cmd --permanent --add-port=23/tcp
firewall-cmd --reload
# 为了方便，关闭防火墙
暂时关闭防火墙

  systemctl stop firewalld

  service  iptables stop

　永久关闭

  systemctl disable firewalld

  chkconfig iptables off

  重启防火墙

  systemctl enable firewalld

  service iptables restart