Urbackup Starting backup failed

Hello, I installed urbackup on TurueNAS Scale using this tutorial: https://www.youtube.com/watch?v=w9MZSkEgfHM and it went smoothly, but I can’t do backup I get error Starting backup failed.


I read on another topic that having client and server on different subnet is a problem so I enabled internet backup but it didn’t helped. Also on discovery hints shows different status than on backup status, but it is the same client. The log files are empty on both server and client sides. Maybe I need to add some windows firewall rules or my configuration is wrong?
UrBackup 2.5.33 - server
UrBackup 2.5.25 - windows client (Windows 10 Pro 22H2)
Server settings:

Client settings:
2024-08-12 09_39_54
Client status:
2024-08-12 09_44_40

After a few days of pulling my hair out I found what fixed this for me, on the client I needed to set the “/etc/default/urbackupclient” file setting from:
INTERNET_ONLY=true
should now be
INTERNET_ONLY=false
Once I set this and rebooted the system started backing up the clients.

If it’s set to true, client will not bind to any external network ports. So all my clients are on my VPN even though they technically are internet, nothing is going through my outside firewalls. So, if you’re trying to connect to a client that is in your LAN this should fix the problem. After looking at the documentation I found it a little confusing as it didn’t really describe it completely.

I found better information at this link which I guess is another part of urbackup? LINK