Samba Ubuntu DOS refusing password

oden08 junk at
Wed Sep 17 12:17:59 GMT 2008

Dude, you are awesome!  Been working on this for a couple of weeks now and
after putting in the hook you suggested it is all working.  Its a closed
internal network so brute force not so much a concern.  Thanks so much!


Steve Langasek wrote:
> On Tue, Sep 16, 2008 at 12:04:34PM -0700, oden08 wrote:
>> Hello, wondering if you all could help me with a problem that I have been
>> searching for an answer to for a few days.
>> I have a Samba V3.0.28a server running on the Ubuntu Server V8.04.1.  I
>> can
>> connect to the share I have setup with my Windows XP PC's as well as my
>> Ubuntu desktop I have running.  I want to use this to host my ghost
>> images
>> though and so am trying to connect to it using a DOS bootable floppy and
>> using "net use" to connect but getting the following:
>> N:\net use x: \\ubuntusamba\ghostimages
>> -->Type your user name, or press ENTER if it is <computer name>: <typed
>> username>
>> -->Type your password:<typed password>
>> -->Password is invalid for \\UBUNTUSAMBA\GHOSTIMAGES.
>> -->Type the password for \\UBUNTUSAMBA\GHOSTIMAGES: <typed password>
>> -->Error 5: Access has been denied
>> When using the same username and password on my normal XP & Ubuntu
>> workstations I am able to login without problems.  I previously had an
>> old
>> Windows Server 2000 PC that I was sharing these using the DOS disk method
>> but needed to replace so though I would take the opportunity.
>> Can anyone shed some light on this for me as I am to the point of pulling
>> out my hair.  Anything would be appreciated.  thanks.
> As shipped in Ubuntu 8.04 LTS, Samba as a server will refuse to negotiate
> LANMAN password encryption by default because it's *very* brute-forceable.
> If you need to support old clients not capable of negotiating NTLM, you'll
> need to set 'lanman auth = yes' in your smb.conf and run 'smbpasswd' again
> to generate a lanman password hash for this user.
> This change was made in Samba 3.0.28a for Ubuntu 8.04 LTS in anticipation
> of
> the same change happening upstream in Samba 3.2, due to Ubuntu 8.04's
> status
> as a Long Term Support release.
> -- 
> Steve Langasek                   Give me a lever long enough and a Free OS
> Debian Developer                   to set it on, and I can move the world.
> Ubuntu Developer                          
> slangasek at                                     vorlon at

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