I have a client which was added some time ago but is not able to do backups anymore. I suggested it was due to infrastrcutre changes, but this makes no sense (new router). So I have deleted the client from urbackup and tried to move him back to the list of clients. Did not work. I have also reinstalled the client software (client and server are on the latest patchlevel) and no success. From the client I can ping the backup-server, but the backup server cannot ping the client. So I suggest it is an firewall issue? On the client (Windows 10 with Avira Antivirus installed) was nothing changed. All the other clients for fine in the same network.
How can I resolve this issue?
Manual adding of the client did not work also, “client is offline”.
Any help would be appreciated without disabling the firewall