1.不能telnet,
報錯信息：
Not on System Console.
Connection to host lost.
解決方案：
if you cant' then you have a problem with your telnet setup in which case you should check your /etc/services file for Telnet services and then do a #ps -ef |grep telnet and look for a process called in.telnetd ...but if you can then i would try this>>>
well the first thing i would check is to see if the CONSOLE line in the /etc/default/login is commented out or not.
# vi /etc/default/login
CONSOLE=/dev/console
is the line you are looking for and you would want to put a # sign in front of it.
#CONSOLE=/dev/console
this will allow connection to the box from remote locations.
this line tells the system that you must login at the console
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2.不能SSH,（不能用putty鏈接）
錯誤信息：
Nov 17 01:10:02 webzone sshd[2244]: Failed keyboard-interactive for root from 192.168.1.227 port 53189 ssh2
解決方案：
edit /etc/ssh/sshd_config to enable root logins,and then reboot