[K12OSN] freenx issue

[Nils Breunese]

Nadav Kavalerchik wrote:

> just a little advise for the time you get it fixed
>
> we had alloooooot of log warnings of hackers trying to crack the  
> machine
> through port 22 so we moved it very high... beyond 62744
>
> now all is quiet :-)

I like to set up public key authentication and then disable password  
authentication for SSH. Then install a brute-force blocker like  
DenyHosts [0] or Fail2Ban [1] and things are also quiet. And our users  
don't need to specify a custom port.

Nils Breunese.

[0] http://denyhosts.sourceforge.net/
[1] http://www.fail2ban.org/