He’s winning against the gangs though - every Salvadorean I know supports him.

On Linux you can do this with full control via network namespaces. I use vopono to automate it - https://github.com/jamesmcm/vopono

But if you can afford it I’d recommend paying for Proton’s services as they offer a lot together, or a low-end VPS (where you could do it yourself, although be careful to find ones that don’t ban hosting Wireguard, etc. for example). Both are really useful if you want to test making something local available on the Internet e.g. ports for multiplayer games or a webserver prototype.