1.执行安装语句
- yum -y install telnet-server.x86_64
- yum -y install telnet.x86_64
- yum -y install xinetd.x86_64
2.设置开机自启：
- systemctl enable xinetd.service
- systemctl enable telnet.socket
3,开启service：
- systemctl start telnet.socket
- systemctl start xinetd
4.编辑vi /etc/securetty 允许 root 账号登陆末尾添加两行
pts/0
pts/1
pts/2
注意：允许3个终端登陆，第四个就拒绝了
强踢掉用户
1.查询who
2.pkill -kill -t pts/0