SMB Encryption Causing 3CX Backups to Fail

[Benjamin Williams]

Greetings -

We recently enabled SMB encryption for one of our customers - this change was driven by some vulnerabilities within the SMB protocol that were recently published by MS.

Now that SMB encryption has been enabled, our daily 3CX backups are failing. (e.g. we were previously backing up this 3CX instance via SMB directly to a share on the customers server; prior to enabling SMB encryption, the backups have successfully ran for years).

Is there any known workaround for this? (aside from reverting the SMB encryption changes).

 

[Alphabetic]

Have you looked at any of the SMB logs on the server?

 

[Benjamin Williams]

Thanks,...

Looks like we may need to enable SMB3 on the 3CX Linux host *(?)

As it currently stands, 3CX appears to be sending the Microsoft server unencrypted packets (which of course are being rejected by the Windows Server). Do you know if enabling SMB3 has any adverse impact on 3CX?