Enterprise Networking Planet: Build a Linux-Based Single-Board WAP (Part 3)

“In the first two parts of this series we took a tour of the
Soekris 4521 single-board computer and installed the Pyramid Linux
operating system. Now it’s time to build a good stout iptables
firewall.

“When you’re used to hacking on old PCs it’s easy to fall into
bad habits, like stuffing all manner of services on border routers
and turning them into ‘Internet gateway/LAN servers’ because you
have the capacity, and you don’t want to clutter up the place with
big old PCs dedicated to specialized jobs. But this isn’t really
the best way to design your network. Putting a router and a
firewall on a single device makes sense for us ordinary mortals
with simple routing needs and not-too complex firewalling schemes.
Put the intrusion-detection/proxies/Web/mail/FTP/file/etc. servers
somewhere else…”

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