1）sudo apt-get install telnetd openbsd-inetd
2）more /etc/inetd.conf
## netbios-ssn stream tcp nowait root /usr/sbin/tcpd /usr/sbin/smbd
telnet stream tcp nowait telnetd /usr/sbin/tcpd /usr/sbin/in.telnetd
确保配置文件里有以上内容！
3）sudo /etc/init.d/openbsd-inetd restart
4）登录测试：
admin@ubuntu:~$ telnet 127.0.0.1
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
Ubuntu 7.04
ubuntu login: admin
2）more /etc/inetd.conf
#
telnet stream tcp nowait telnetd /usr/sbin/tcpd /usr/sbin/in.telnetd
确保配置文件里有以上内容！
3）sudo /etc/init.d/openbsd-inetd restart
4）登录测试：
admin@ubuntu:~$ telnet 127.0.0.1
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
Ubuntu 7.04
ubuntu login: admin
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