We have a Sonicwall Pro 230 (very old I know) and we have enabled Windows Networking (NetBIOS) Broadcast Pass Through from the Lan -> Wan and Wan -> Lan in our VPN setup. We have a third party company (External) that does backups of our server using Retrospect 7.5.116. Since this modification it would seem that the backups have been failing (4 Days in a row.
We are using a Windows 2003 Server with SP2 and on the Sonicwall the correct ports are enabled for the Retrospect backup to occur. The ports for the backup have not been modified and the backup has been working for quite some time. The only change to the network of any sorts is that Windows Networking (NetBIOS) Broadcast Pass Through has been enabled.
Any help would be appreciated.