[Samba] samba 4.5.10 and old clients with NTLMv1

L.P.H. van Belle belle at bazuin.nl
Thu Jul 27 10:53:50 UTC 2017


I suggest these settings. 

   lm announce = no
   lanman auth = no
   ntlm auth = no
   client lanman auth = no
   client ntlmv2 auth = yes

This keeps samba secure and allows XP clients.

Greetz, 

Louis
 

> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens Ph 
> Lachaud via samba
> Verzonden: donderdag 27 juli 2017 12:38
> Aan: samba
> Onderwerp: Re: [Samba] samba 4.5.10 and old clients with NTLMv1
> 
> Hello Stefan,
> had the same problem here, as you said adding "ntlm auth = 
> yes" solved it, so yes it will work with this added to the 
> global conf. 
> The problem comes from this option being set to "no" by 
> default with the new versions.
> Don't know about setting this specific parameter for a share 
> only, interested in the answer.
> Regards. 
> 
>     Le Jeudi 27 juillet 2017 11h29, Stefan G. Weichinger via 
> samba <samba at lists.samba.org> a écrit :
>  
> 
>  
> At a customer they still have some old VMs around that run Windows XP.
> 
> Yes, I already provided them with newer VMs ... but the users 
> still need/want the old machines as well.
> 
> Now the batch file with the "net use" statements fail, as far 
> as I have researched because of the weak and outdated NTLMv1:
> 
> [2017/07/27 11:11:08.538343,  2]
> ../libcli/auth/ntlm_check.c:424(ntlm_password_check)
>   ntlm_password_check: NTLMv1 passwords NOT PERMITTED for user vmuser1
> 
> I assume I can enable that via the parameter "ntlm auth = yes"?
> Currently it is "no", sure.
> 
> It's a global parameter, according to the man page, is there 
> a way to only enable NTLMv1 for this specific share?
> 
> thanks, regards, Stefan
> 
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