Sync error between android and firefox

MSG: Ice connection failed.
NAME: Error
STACK: v@index.android.bundle:1171:249
value@index.android.bundle:1171:11401
oniceconnectionstatechange@index.android.bundle:1171:2031
value@index.android.bundle:1288:1505
index.android.bundle:1287:3565
value@index.android.bundle:53:1280
value@index.android.bundle:32:3676
index.android.bundle:32:832
value@index.android.bundle:32:2930
value@index.android.bundle:32:804
value@[native code]

I don’t have permissions to edit my posts yet (and the above was generated by the app), but can confirm that I still can’t sync between Android and Firefox due to a timeout.

And this even after changing my Linux distro a more standard one and a fresh install of Firefox (see [SOLVED] How to restore on a new computer & then back up? for details).

This happens regardless whether both devices are on the same WiFi or the laptop is tethered to the phone.

Hmm, just remembered …could it be the firewall? What ports do need to be open on the laptop/desktop’s firewall?