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Problem with new Tailscale install to bypass ISP CGNAT (lemmy.ml)

submitted 5 months ago by [email protected] to c/[email protected]

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I have a cloud VPS running Ubuntu with Tailscale installed directly. I also have Tailscale installed on my home server.

I'm trying to access my self-hosted applications from outside my home network which I did easily until I switched to fiber internet that uses CGNAT.

Tailscale is working locally but not outside my home network. A suggestion was to disable IP v4 on Tailscale since it conflicts with the CGNAT IP my ISP is using. However when I add the "disableIPv4": true to the config file in the access control area of Tailscale, I keep getting various errors.

Any help would be appreciated.

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[–] [email protected] 0 points 5 months ago* (last edited 5 months ago) (1 children)

Is the remote host simply not able to join your local tailnet or is the issue specifically with accessing the services on the local hosts?

Are you seeing any errors in your tailscaled logs?

[–] [email protected] 0 points 5 months ago (1 children)

I did some more testing and I can access my Nginx Proxy Manager from outside my network. The issue appears to be accessing the self-hosted applications on my home server, mainly Jellyfin. I still think the issue is the IP conflict with Tailscale. NPM is fairly easy to configure and is setup correctly with my domain name.

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

the way i got around this is to set my DNS settings on my domain to be the IP of my NPM server's tailscale address.

i.e. 100.12.34.56 A record for mydomain.com, but leave all the local addresses the same