as someone above commented, Why IPChains?
On one thought, how much will i get paid to write article explaining, setting up the following things on linux.
recompiling kernel 2.4.* with gr-sec patch.
firewall with iptables.
Apf with bfd (brute force detection).
rkhunter / chrootkit.
finally scanning and hardening your configurations with bastille-script.
This might sound advance, but the way script-kiddies have easy access to exploits on irc and underground sites, Installing the above should be basic in security.
On Other Thought. I might not write this kind of article, as I would prefer "Real Companies" hire a experienced professional admin who has chiseled his skills for years securing linux, and not some admin who claims to have KB securing linux relying on Oreilly article.