开启windows端Telnet功能
控制面板→程序→启用或关闭Windows功能→选择Telnet客户端
2.Ubuntu开启Telnet服务
sudo apt-get install xinetd telnetd
编辑/etc/inetd.conf，在文件中添加：
telnet stream tcp nowait telnetd /usr/sbin/tcpd /usr/sbin/in.telnetd
修改/etc/xinetd.conf，在# log_type = SYSLOG daemon info下添加：
instances = 60 log_type = SYSLOG authpriv log_on_success = HOST PID log_on_failure = HOST cps = 25 30
编辑/etc/xinetd.d/telnet文件，添加：
# 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
}
重启网络
sudo /etc/init.d/xinetd restart
3.测试Windows通过Telnet远程登录Ubuntu
打开cmd→输入telnet→输入open ubuntu ip→输入用户名密码
远程登录成功~