Characters limitations in the "User Logon Name (more than 20 characters)"

[Andrew Bartlett]

On Tue, 2010-03-30 at 08:34 +0530, Rohit Rajan wrote:
> Hi,
> 
> We have created a user with the logon name longer than 20 characters, 
> user created successfully, but when trying to logon to windows XP box, 
> user is not able to logon using the "User Logon Name (more than 20 
> characters)" but is able to logon using the "User Logon Name [Pre 
> windows 2000]" which is only 20 characters.
> 
> Is this the normal behavior, i'm not sure but i believe with windows 
> 2003 and windows xp user should be able to logon using the full "User 
> Logon Name (more than 20 characters)".
> 
> I'm using samba Version 4.0.0alpha12-GIT-ba74823 and windows XP service 
> pack 3 with all the patches up2date of windows XP
> Please suggest.

http://msdn.microsoft.com/en-us/library/cc220838%28PROT.10%29.aspx seems
to indicate that this attribute should be limited to 20 characters.
Perhaps somewhere a char name[20] still exists in Microsoft's clients.

You may be able to use a longer user name in the userPrincipalName
attribute, but I can assure you that this limitation isn't in Samba (we
just don't ever use fixed length strings except where the protocol
requires it - which isn't the case here). 

Andrew Bartlett

-- 
Andrew Bartlett                                http://samba.org/~abartlet/
Authentication Developer, Samba Team           http://samba.org
Samba Developer, Cisco Inc.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 190 bytes
Desc: This is a digitally signed message part
URL: <http://lists.samba.org/pipermail/samba-technical/attachments/20100406/48495cd2/attachment.pgp>