Can samba mitigate the vulnerability of NT hashes?

David Collier-Brown davec-b at rogers.com
Wed Jan 9 08:29:23 MST 2013


Excellent, thanks, Laurent!  --dave

On 01/09/2013 09:55 AM, laurent gaffie wrote:
> Hi Dave,
> 
> See :
> http://www.samba.org/samba/docs/man/manpages-3/smb.conf.5.html#NTLMAUTH
> 
> Also, forcing NTLMv2 authentication won't stop offline cracking attacks
> if you don't use strong passwords.
> 
> Regards,
> 
> 2013/1/9 David Collier-Brown <davec-b at rogers.com
> <mailto:davec-b at rogers.com>>
> 
>     Slashdot was all a-twitter about Mark Gamache's tutorial on breaking
>     NTLM hashes (see
>     http://markgamache.blogspot.com/2013/01/ntlm-challenge-response-is-100-broken.html)
> 
>     I know we have long supported NTLMv2, but does the protocol allow a
>     Samba server to convince a client to *only* use NTLMv2, the version that
>     is not susceptible to this particular attack?
> 
>     If so that would be A Kind Thing to do for the community...
> 
>     --dave
>     --
>     David Collier-Brown,         | Always do right. This will gratify
>     System Programmer and Author | some people and astonish the rest
>     davecb at spamcop.net <mailto:davecb at spamcop.net>           |          
>                -- Mark Twain
>     (416) 223-8968 <tel:%28416%29%20223-8968>
> 
> 


-- 
David Collier-Brown,         | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
davecb at spamcop.net           |                      -- Mark Twain
(416) 223-8968


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