I want to set up a VPN on my network. I don't really want to go down the route of controlling the VPN by installing apps on all my devices. So, I'm looking for a router add on that'll act as a gateway to allow all my traffic from all devices to be VPN protected. Pretty much all the ones I come across are pre-configured to work with a particular VPN service but I'm after one I can configure to my chosen VPN. Can anybody recommend one? Thanks.