[Samba] "lanman auth" question

[ToddAndMargo]

Hi All,

Server:
    Fedora 26
    samba-4.6.8-0.fc26.x86_64

Workstations (5 of them):
    XP Pro SP3


I set all five of my customer XP workstations to

Send NTLMv2 response only\\refuse LM and NTLM

and turned off (smb.conf)

   lanman auth = yes
   ntlm auth = yes

And had to turn it right back on as the customer's
Xerox Workcentre 3550 multifunction printer scanner
requires it

What are the security ramification to Samba?

Many thanks,
-T
Tony Ewell, B.S.E.E.
Owner, Rent-A-Nerd Computer Services
775-265-5150,  9:00 am to 5:00 pm PST/PDT


Error from the scanner:

Destination 1      : Status....Failed
Status Details     : username or password is wrong
Friendly Name      : WorkCenter
Server Name        : 192.168.255.12
Path               : scans
Protocol           : SMB
Filing Policy      : CHANGENAME
Document Name      : 1