I was going to use the built-in OpenVPN in TrueNAS until I found out it's going to be deprecated.
I only really need it for the qbitorrent/transmission and prowlarr/jackett (haven't decided yet) apps in TrueNAS, so I don't know what the next best option is.
I have found plenty of documentation on how to use the integrated OpenVPN feature of TrueNAS, but since the announcement of it's deprecation and future elimination is only ~2 months old, I haven't found any new documentation yet on alternate methods.
I see stuff about tailscale but that doesn't seem to be what I'm trying to do.
Thanks.
Use the wireguard plugin directly on your OPNsense router.
I’ve heard the Tailscale plugin is good as well, maybe easier to set up. I’ve never used it though. Overall, Tailscale seems very approachable and is based on wireguard as well.