Hello,
Somebody or bodies are trying to hack into my server. All it does is ftp and ssh and people are trying to hack into it via ssh. In the system log there are long lists of failed login attempts with different user names. I have beefed up all the passwords, and made sure that there is no root login. Should I be doing anything else.

Something else that has started to happen is that external access to the server, ie not from the network has suddenly got very slow. But from within the network is fine. Can anyone think why this might be, the upload/download seems to be the same as before and I can surf the net from the server without problems.

Cheers,
Phil

Hi
Thanks for that, I should have look more carefully but its the first time I have been hacked. Exciting stuff Looks like this tool is being used on me also. About every two days it would seem.

Cheers,
Phil

You're not necessarily being compromised each time the attack ensues. Check your /var/log/auth.log to see if there are any unauthorized logins.

No, your right. I should have said, "its first time someones attempted to hack my server". As the person appears to have failed. This tool they are using that tests a list of names didn't get the login.

Cheers,
Phil

As others have said, the strongest defense is to disallow password logins completely, using only digital certificates.

If you don't have a badge, you can't come in. And there's no way for you to "fake" a badge.