[Samba] NetBIOS Hostname

William W. Hammond
Fri, 30 May 2008 19:48:38 -0000

At 12:14 PM 5/30/2008, John H Terpstra wrote:
>On Friday 30 May 2008 12:54:33 William W. Hammond wrote:
> > I was setting up Samba on an OpenSuSE 10.3 i386 computer.
> >
> > At the last minute I decided to enter a NetBIOS Hostname, big mistake.
> > A message popped up warning me that entering a NetBIOS Hostname would
> > create a new UID and Clients may no longer be able to connect.
> > The Message was correct....
> >
> > However, (Design Flaw) at that point there was no way for me to back
out or
> > cancel, so the deed was done.
>
>The issue is not whether or not Samba has a NetBIOS name, but rather that a
>change of the NetBIOS name will generate a new SID for the system.  If that
>system is a PDC, you will end up with a new Domain SID, and hence your
>Windows clients will no longer belong to the same domain your PDC is now in.
>
> > How or where do you remove or change that option...?
>
>You can find out the original domain SID from your Samba log files
>in /var/log/samba.  Then reset the domain SID using:
>         a) Stop Samba
>         b) Execute: net setlocalsid
"S-1-5-21-xxxxxxxx-xxxxxx-xxxxxxx"
>         c) Restart Samba
>
>That should restore things so long as you have not messed around with things
>too much, in which case it would be easier to rejoin your Windows clients to
>the current Samba domain setup.

Thanks, that is what I needed, goes in my "Tech Save" box...
I still think I should have been able to opt out once I saw the warning,
Is that a Samba Issue or an OpenSuSE YaST issue...?


>PS: By default Samba finds the hostname of the system it is running on and
>uses that to generate the machine SID (and the domain SID if it is a PDC).
>
>- John T.
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