I have an old desktop PC (Celeron D, 512 MB RAM, 80 GB HDD) which I'd like to turn into a router/VPN service or something where I could learn all that and more.
Which OS/software do you recommend? I've read something about DD-WRT x86 and FreeBSD but am not sure if those are free and if they even support what I'm looking for.
Se yeah, I would like to set a home VPN service. And play with other stuff. The more feautures the better. So what would you recommend?