It’s a bit older but a very cheap way to use a Linux Machine as an internet Router/Gateway. There is no need to be a LINUX expert to do this task. No need to have two physical fast Ethernet cards. Sharing internet connection with only one physical fast Ethernet card is very easy.
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Another option is to use a hardware router (which enables wireless network as well) e.g. D-Link
its better to use two physically seperate NIC's
There are some all-in-one UTMs that allow you to control your in-and-out traffic very efficiently like ideco gateway
You can set all kinds of restrictions rules per user, per group and more , its also a firewall and mail server etc , however it requires a dedicated server
so yeah this is what i chose for my network of 100 worksattions and i can recommend it too, price is competative comaredto alternatives with such functionality
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