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Build a Linux Home Router

Building your own router out of old spare parts has many advantages over buying a pre-made canned router by say Linksys. The biggest one by far is control over the connection. The other advantages are left up to your imagination; just about anything can be done in this scenario, it's just a matter of needing it.
This guide will show you how to setup Network Address Translation (NAT) on the router (kernel and iptables), add and configure common services (Domain Name System (DNS) via dnsmasq, dhcp via dhcpcd, ADSL via ppp), and conclude with more elaborate and fun things that can be done (port forwarding, traffic shaping, proxies/caching, etc...).

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