Redhat7开telnet服务

1、启动服务

# yum install telnet-server
# yum install xinetd

# systemctl enable xinetd.service

# systemctl enable telnet.socket

# systemctl start telnet.socket
# systemctl start xinetd（或service xinetd start）

2、问题排查

# systemctl status telnet.socket

tail /var/log/secure    查看log里面刚才客户端是以哪一个端口设备登录

/etc/securetty 将设备名添加

[root@sky ~]# cat /etc/securetty
console
vc/1
vc/2
vc/3
vc/4
vc/5
vc/6
vc/7
vc/8
vc/9
vc/10
vc/11
tty1
tty2
tty3
tty4
tty5
tty6
tty7
tty8
tty9
tty10
tty11
ttyS0
ttysclp0
sclp_line0
3270/tty1
hvc0
hvc1
hvc2
hvc3
hvc4
hvc5
hvc6
hvc7
hvsi0
hvsi1
hvsi2
xvc0
pts/0     ****
pts/1     ****
[root@sky ~]#