[CentOS] ssh attack

On Monday 13 February 2006 7:19 pm, Will McDonald wrote:
> * If you know absolutely where all SSH connections originate from drop
> all other traffic on that port bar the know IP address/range
>
> As long as you at least understand the basics of how and why you're
> doing these things, the more layers of security you add the better.

Great summary.

You might want to add:
*Ban/block class A subnets you know you would never need SSH access from 
(usually foreign countries, etc)
*Consider dedicating a spare machine to run as an SSH server/proxy.