linux开启telnet

apt-get -y install openbsd-inetd

apt-get -y install telnetd

vim /etc/inetd.conf
      #: STANDARD: These are standard services.
      telnet    stream     tcp    nowait    telnetd    /usr/sbin/tcpd    /usr/sbin/in.telnetd

/etc/init.d/openbsd-inetd restart

netstat -a | grep telnet

效果如下