Comment Re:Find a cheap machine... (Score 2, Informative) 376
Agreed, mini itx is one of the best ways to do this. Fanless has a long, stable lifespan and using a portable hard drive will keep operating power usage down close to a dedicated router so it does not work out that much more expensive. You can run a transparent proxy, secure remote access, transparent tunneling/VPNs, gather statistics, etc.