Centos7-安裝telnet服務

yum -y install telnet-server.x86_64
yum -y install telnet.x86_64
yum -y install xinetd.x86_64

設置開機自啓：

systemctl enable xinetd.service
systemctl enable telnet.socket

開啓service：

systemctl start telnet.socket
systemctl start xinetd

netstat -nltp看一下是否開啓了23端口，若是開啓表明成功了