OCModShop posted part 2 of their Linux firewall series

Many firewalls make certain assumptions and use several standard conven tions. Understand the standard terminologies and you'll have an easier time when setting up your firewall.

Firewalls use standard conventions when referencing areas of the network. There are four basic network types, all of which can be managed by the firewall at the same time. These networks are called

Custom Firewall Part 2: Determine Your Network Setup