Not sure how to answer that.
Live Verbose log only has one line:
Backend event: List - Started: ()
In Duplicati, it’s using FTP
Not sure how to answer this.
Outside of Duplicati, the LAN NAS is accessible via SMB, for things like accessing other files stored on the LAN NAS.
Thanks for these and the other resources in your reply. These resources seem both pretty detailed, but also pretty complex.
Problem solved: Turns out the LAN NAS itself was hung. Rebooted it. Did a “Verify files” in Duplicati and it looks like it worked without any issues.
Thank you for your help.