If it's openvpn you can just port forward from your router to the RaspberryPi's internal ip address.
If it's a webserver you can do the same, or use something like Cloudflare tunnels to expose the service.
If it's a webserver you can do the same, or use something like Cloudflare tunnels to expose the service.
Not saying that's for everyone but I do feel like the default should be to click the two buttons in your router interface and third parties a fallback option or conscious choice. Probably just as quick as signing up for tailscale, if it weren't for that all routers feel like they need to reinvent a UI so it's never twice the same