Build your own private WireGuard VPN with PiVPN

If your router supports OpenWRT that's a good alternative that doesn't require any additional boxes/boards and is simpler to set up networking-wise.

There's a nice UI that generates the QR codes or config files ready for import into client devices.

1: https://openwrt.org/docs/guide-user/services/vpn/wireguard/b...

Before going to a long 3 month trip to Asia last year, I installed WireGuard on my Raspberry Pi 1 (original model B from 2012) which was running at home in US. I found PiVPN to be the easiest way to install Wireguard. I didn't know if I even needed a VPN but I was glad, and I was able to use internet as if I were at home. It was weird, but a lot of sites are blocked oversea, even though it shouldn't. For example, I couldn't access Homedepot.com. I also couldn't make payment to my Target card as the website refused connection. Apparently a lot of US business sites refuse to connect from oversea IP because of too many hacking attempts, or they just don't want to deal with it. Anyway, I was glad I had set up a VPN before I left for the trip.

Also, the original Pi (2012) was able to run Wireguard well enough for light VPN, although I didn't push it too much since I didn't use it for anything heavy like video streaming.

Or just use a Mikrotik router which has Wireguard support built-in.

Or you can use ZeroTier.

The one problem I encounter with Wireguard is the use of UDP. Some publicly accessible Wifi nets at shops don't allow UDP at all, and this effectively breaks use of the VPN.

Yeah, there are utilities like setting up udptunnel or udp2raw and similar, but what a headache. I really don't agree with Wireguard's developers justification that it makes speeds terrible. Who cares? It'll be terrible using those utilities anyway. Give us the option, JFC.