pfSense & Tailscale Connection Issue

Networking & Firewalls
1

I am having an issue when attempting to connect to an off site device through Tailscale set up on pfSense. The issue is only affecting one of the additional subnets I added. I am sure it is a configuration setting I am missing but I am not able to determine what the issue is.

Tailscale is setup on pfSense with the following advertised routes: 10.0.1.0/24 and 10.0.10.0/24. Within Tailscale both Subnet routes are approved. When I attempt to connect to the remote device through Tailscale on the 1.0 network, all works fine. However, I am not able to connect from the 10.0 network. I have disabled all firewall rules on the 10.0 network with the exception of the default allow all rule just in case one of my rules was causing it and this did not help.

Any advice on steps I can take to further troubleshoot the issue?

2

Does that subnet overlap with any other subnets that are in use?

3

Thanks for the follow-up. No, it does not. But I did finally figure it out. I did not enter a mapping for the other subnet in outbound NAT. Once I did all worked as expected I did not realize I missed this step until watching Christian McDonald’s video on Tailscale.