How to connect to Mac using Mosh with Firewall enabled?

[iflowerml]

Blink is launching the remote mosh-server yet cannot connect to it. How to configure Mosh with Mac that uses a firewall? How to allow UDP connections to connect to a mosh-server?

[iflowerml]

Let’s configure the MacOS firewall to let mosh-server bypass the firewall with the following script. Make sure that $MOSH has the right location of your mosh-server.

#!/usr/bin/env bash
  FW=/usr/libexec/ApplicationFirewall/socketfilterfw
  MOSH=$(/opt/bin/mosh-server)
  sudo $FW --add $MOSH
  sudo $FW --unblockapp $MOSH	

Mosh still not connecting?

As a workaround while you figure out what is going on, try using SSH instead of Mosh and enable “Geo Track”.

Double Tap home bar [on Screen] or CMD [on keyboard].

This will enable geo tracking inside Blink. Please remember, your geo location is NOT shared to anyone, it is a security feature with the added benefit to allow Blink to stay in the background longer. Read more

[iflowerml]

Another option is to use Tailscale. Tailscale will create a VPN between your devices and it may allow for more flexible rules in your firewall. It also has the added benefit of allowing you to connect to your remote machine from anywhere in the world on any network!

Check out their Walkthrough