Re: First Steps.

On 5 September 2011 14:56, Kees de Jong <keesdejong@gmail.com> wrote:

I can recommend you this book: "Linux Firewalls Attack Detection and Response with Iptables, PSAD, and Fwsnort"
It goes very deep into the theoretical  and practical  use of firewalls on Linux.
It also goes into intrusion prevention and detection.

You can also dig into the Debian security manual: http://www.debian.org/doc/manuals/securing-debian-howto/
And you can start auditing your system now with: tiger, lynis, lsat, logwatch, chkrootkit, rkhunter, debsecan and checksecurity
Use the man pages to learn how to use them ;-)

Good luck!

Thanks!
I've been looking round.
Apparently this one is good also.

http://nostarch.com/firewalls.htm

Regards,

Weaver.

--

Religion is regarded by the common people as true, 
by the wise as false, 
and by the rulers as useful. 

— Lucius Annæus Seneca.

Terrorism, the new religion.