安裝telnet-server及telnet服務(wù)
yum install -y telnet-server* telnet安裝xinetd服務(wù)
yum install -y xinetd修改配置文件，沒(méi)有則創(chuàng)建
vi /etc/xinetd.d/telnet
# default: yes
# description: The telnet server servestelnet sessions; it uses \
# unencrypted username/password pairs for authentication.
service telnet
{
flags = REUSE
socket_type = stream
wait = no
user = root
server =/usr/sbin/in.telnetd
log_on_failure += USERID
disable = no
}
- 允許root用戶telnet 登錄,配置telnet登錄的終端類型砌左，在/etc/securetty文件末尾增加一些pts終端
pts/0
pts/1
pts/2
pts/3
查看
image.png
- 啟動(dòng)xinetd及telnet并做開(kāi)機(jī)自啟動(dòng)
systemctl enable xinetd.service
systemctl enable telnet.socket
systemctl start telnet.socket
systemctl start xinetd.service
檢驗(yàn)23端口是否可用
netstat -tnl |grep 23-
驗(yàn)證配置
- 不重啟驗(yàn)證
telnet localhost 重啟服務(wù)器驗(yàn)證
