On my Debian Buster I have a Samba share that works fine from both Windows and Linux clients.
I've configured the Samba with
min protocol = SMB2 in smb.conf and with local user/password authentication (no AD).
But I'm not able to connect to the share from neither my Brother network document-scanner nor my HP MFP (using CIFS). These devices connect fine to shares on Windows computers where SMBv1 is disabled (I assume SMBv2 must be used then).
If I remark
min protocol = SMB2 on my Samba server they connect fine! Can it be anything else than a bad
SMBv2 implementation on the devices? A firmware update to the HP printer didn't solve the problem.
Any suggestions are welcome :-)
I started to read the smbd manual now :-/
I increased the log-level using
log level = 5 in smb.conf, remarked
n protocol = SMB2 and then did a scan-session. I can see in the log for the session (/var/log/samba/log.10.0.1.20) that it is actually using smb2_02. So I just need to dig a little more so see why it goes wrong when setting the mininum protocal level.