Originally Posted by
joshwex90
Is it difficult to create your own?
Depends how technologically minded you are. You probably need to put a custom firmware on your router (I use Tomato, but DD-WRT works too, as do others.). Then you need to configure it, which is pretty simple (to me, at least, but I've been a computer nerd since I was a kid).
The FoxyProxy plugin just automates switching Firefox's proxy settings.