Building a Linux Network Appliance, Part 3
You probably already know that a firewall is an essential component in your network border security. But you may not know that a Linux-based iptables firewall is especially robust and configurable. Today we'll set up system administration using Webmin, and in our next installment we'll create a good stout Internet-connection sharing firewall.
It's important to keep in mind that a firewall is only a single piece of your security architecture. It's equally important to pay attention to your application-level and operating system security. Linux/Unix hosts can be locked down to the point that a firewall is not necessary. But Windows cannot, and Mac OS X is still an unknown.
If there are Windows hosts on your network, your work is cut out for you.
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