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HN?
This document consists of two parts. The first is setting up a firewall (using iptables) on the HN, which will restrict traffic to the containers. The effect would emulate, as far as the containers and their customers are concerned, an external hardware firewall controlled by the sysadmin. The second is setting up a firewall that protects the [[HN ]] itself but still allows traffic to the containers, thus allowing individual containers to define their own iptables.
While the firewalls shown here can be accomplished using iptables manually (or using Fedora core's iptables service), the methods presented here are especially modular and easy to modify. This is important when you have 20+ containers and a lot of other things to be doing...
