1.安裝inetd
$ sudo apt-get install openbsd-inetd
2.安裝xinetd 和 Telnet
$ sudo apt-get install xinetd telnet
3.配置telnet
$ sudo vim /etc/inetd.conf
輸入:
telnet stream tcp nowait telnetd /usr/sbin/tcpd /usr/sbin/in.telnetd
$ sudo vim /etc/xinetd.conf
在#log_type = SYSLOG daemon info下面添加內容:
instances = 60
log_type = SYSLOG authpriv
log_on_success = HOST PID
log_on_failure = HOST
cps = 25 30
# sudo vim /etc/xinetd.d/telnet
輸入以下內容:
# default: on
# description: The telnet server serves telnet sessions; it uses \
# unencrypted username/password pairs for authentication.
service telnet
{
disable = no
flags = REUSE
socket_type = stream
wait = no
user = root
server = /usr/sbin/in.telnetd
log_on_failure += USERID
}
4.重啓inetd服務,xinetd服務
$ sudo /etc/init.d/openbsd-inetd restart /etc/init.d/xinetd restart
5.查看telnet是否開啓
$ sudo netstat -utlp
返回 ....*:telnet*.....
6.試用一下
$ telnet localhost
正常返回