Linux使用

在linux中userid和usergroup分别存于 /etc/group, /etc/shadow, /etc/passwd
在group 中可以修改sudo group和admin权限

远程登陆设置在 /etc/ssh/ssh-config 和 /etc/ssh/sshd-config里，重设后 /etc/init.d/ssh restart

在webmin中更改了firewall后必须重启网络 : /etc/init.d/networking restart

In Ubuntu, remote desktop is available with :

System->preference->remote desktop

or install VNCviewer on windows, the port 5900 and 5901 are required