[Samba] login without domain\username

ERIC PEYREMORTE eric.peyremorte at univ-grenoble-alpes.fr
Tue Feb 2 14:33:23 UTC 2021

Hi thanks for your answer ! 

I already have the parameter, but from a windows client or even smbclient, the username gets always prefixed by the machine name. 

Wireshark capture : 

And the winbind seems to work only when the "domain component" is missing from the username : 

from man smb.conf : 
winbind use default domain : 
"This parameter specifies whether the winbindd(8) daemon should operate on users without domain component in their username." 

Maybe what i want to do isn't possible ? 


De: "sambalist" <samba at lists.samba.org> 
À: "sambalist" <samba at lists.samba.org> 
Envoyé: Mardi 2 Février 2021 12:24:16 
Objet: Re: [Samba] login without domain\username 

On 02/02/2021 11:13, ERIC PEYREMORTE via samba wrote: 
> Hi all, 
> I'm sure it's a newbie question but is it possible to allow users on computers outside domain to connect to a share just with their login instead of domain\login ? 
> Ex: when a user using an off domain computer connects to \\srv-name\share, he has to prefix its username with the domain (domain\user). 
> In our previous setup with samba 3, on our domain member file server we used that : map untrusted to domain = yes. 
> Now we have an AD windows server 2019, several samba4 files servers and a single domain. 
> I can connect to the windows server with bogus\login or plain login, but it doesn't work on file servers. 
> I know i could use the UPN, but it was to make the transition easier to users (non technical). 
> If it's not possible, why isn't it ? Is it something with kerberos of ntlm ? 
> Cheers 

Try adding 'winbind use default domain = yes' to the smb.conf files and 
reload Samba with 'smbcontrol all reload-config' 

If that doesn't work, please post your smb.conf 


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