Where is a good place to find a kind of check list for locking down vulnerabilities on a linux box. Things like version 1.2 of foo has a problem upgrade to 1.21. Also a good list of ports to block.

Thanks,
Jeff

linuxsecurity.com
securityfocus.com

They both show the latest exploits and vulnerabilities for most of the linux distros.

Thanks, thats exactly what I was looking for.