Submitted 2 months ago by ocean@lemmy.selfhostcat.com to selfhosted@lemmy.world
router 1 has subnet routes accepted. But it seems that doesnt work going out?
Do your access rules work in both directions? Do you have any strange routing going on? Do you need to configure a static route for the returning traffic?
Sorry, knowing very little about your setup means i can only suggest vague possibilities based on networks i work with.
Can you ping server 1 from the subnet router?
Make sure to check if you have a firewall blocking ICMP packets on server 1 or somewhere between.
Maybe run traceroute from both serves and compare the route taken and where it stops.
This is very related to the SNAT option for subnet routers on Tailscale. Though it’s enabled by default, I ran into issues with some services when I’d left it turned off by accident at one point.
In theory the “clean” way to do is to not use SNAT but then the network router needs to do some extra work to bridge the gap in the connection. Personally I was a dealing with a strict service on a device that wouldn’t accept regular non-SNAT traffic (the service was smart enough to say “no, I’m only running on 192.x.x.x and refuse to send traffic to Tailscale”).
just_another_person@lemmy.world 2 months ago
You need to adjust your ACLs to allow traffic over Tailscale.
ocean@lemmy.selfhostcat.com 2 months ago
On the router or on server 2?
just_another_person@lemmy.world 2 months ago
For all traffic. Tailscale ACLs deny by default. If you’ve never changed them, you need to do that.