# yum install telnet-server
2、啓動
# systemctl start telnet.socket
注:關閉防火牆systemctl stop firewalld 或者firewalld-cmd --add-service-添加信任telnet服務
3、telnet是pts/線
/etc/securetty 文件裏增加pts/1就可以了,不夠就再多加些,
pts/1
pts/2
pts/3
pts/4
注:非root用戶如果是可登陸賬戶可直接登陸,不用改securetty