[CentOS] SSH Automatic Log-on Failure - Centos 5.5

Fri Jan 28 02:44:38 UTC 2011
Michael Klinosky <mpk2 at enter.net>

m.roth at 5-cent.us wrote:
> Always Learning wrote:
>> Blush, blush .... access is on a non-standard port and then restricted
>> to a few IP addresses.  I don't want my servers taken over by others.
> Security through obscurity doesn't work. Are you familiar with nmap?

If port scanning is a concern, how about implementing port-knocking?

(Granted, it's not always practical.)