I recently saw some tutorials regarding transforming an old PC into a homemade firewall running PfSense. (Initially here
, then here
. They're good tutorials and worth the read.) Pfsense
is a distribution of FreeBSD that is designed to act as a customized firewall and router.
I figured it looked like a cool project, but I'm not an expert on the hardware required for it, so I'd like to ask if anyone here has any experience with this. More concretely, I'm wondering how an old (or new) computer-turned-router would be able to broadcast a WAN signal the same way a router does. I'm assuming of course, that you would have to fit an antenna and a different kind of network card than what your would find in an old laptop, but to be honest, I don't know.
Also, I figured I could hook it up to a switch (which would require me to buy a switch). But if that is the case, I should also be able to hook it up to the router so that the network goes like this:
MODEM ----> FIREWALL (PfSense) ----> ROUTER --(over WAN)--> PC
But either way, I'm just speculating. I was thinking of using the project purely as a learning experience, but I'm interested to know if anyone here has tried this kind of setup before and whether you think it could be practical/useful.