On Sun, May 11, 2008 at 5:56 AM, happymaster23 <happymaster23 at gmail.com> wrote: > but its impossible to break my server These days it's very hard to state that. I would not bet any money on it. The only way to be really sure the server cannot be hacked is to disconnect the network cables (and maybe the power cables too!) > I´m using private key allowed only from my IP and in AllowUsers > is only root) so I don´t know, how is this possible. Consider using AllowUsers to a user other than root and then using "su" for extra protection. Also consider that if you tell someone exactly what security measures you are taking, that would help them come up with a strategy on how to attack you. Filipe