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I have an #OpenWRT router. Let’s say I install Tailscale on it and want to create an interface that specifically routes to one of my exit nodes. Can (thegoatery.dyndns.org)

submitted 1 year ago by [email protected] to c/[email protected]

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I have an #OpenWRT router. Let’s say I install Tailscale on it and want to create an interface that specifically routes to one of my exit nodes. Can I do that?

Everything I’ve seen about Tailscale on OpenWRT just provides direct router access to the tailnet (100.x.x.x), but I specifically want to route certain traffic to an exit node.

Can I do this? Do me proud, Fediverse! Hoping I can get good answers here without resorting to Reddit.

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[–] [email protected] 4 points 1 year ago (1 children)

I am a total beginner in this regard, but maybe maybe this could help you:

Check out PBR - policy-based-routing. On OpenWRT there is an app for this task, vpn-policy-routing (together with luci-app-vpn-policy-routing for a GUI inside LuCi). This app helped me to route all traffic coming from my PiVPN to the WAN interface, instead of my commercial NordVPN. Now at home all my traffic goes to NordVPN and when I am not at home I can easily VPN into my home network.

https://openwrt.org/docs/guide-user/network/routing/pbr

Other than that, the OpenWRT Forum is very helpful, don't hesitate to ask your questions there.

[–] [email protected] 1 points 1 year ago

@glasgitarrewelt Thanks. The routing is less the issue than creating the interface that sends traffic to the Tailscale exit node. AIUI the way Tailscale operates on OpenWRT is to provide an interface whose destination is the tailnet, not an exit node.

[–] [email protected] 3 points 1 year ago

I'm not sure this hits the nail for you or not, but I recently solved a question I had regarding tailscale and routing traffic through an exitnode that was using a VPN. Could be worth a peek.

Solution was Docker and Gluetun ✨

Check it her 👉 https://lemmy.world/post/7281194

[–] [email protected] 1 points 1 year ago

I’ve done something similar, though not with openwrt. There may be a decent way to do this on the firewall, but I ended up using the ACLs available from the Tailscale console.

I removed the default allow all rule. I made a group called admins that can access everything and then added a set of routes that everyone on the tail net could access.

I’ve only recently set this up, but initial testing seems to have this working as hoped.