NTLMSSP auth header

Jeremy Allison jallison at whistle.com
Thu Apr 2 18:11:29 GMT 1998


Luke Kenneth Casson Leighton wrote:

> > Message 1 - Client to server (hello)
> >
> > 00000000  4e 54 4c 4d 53 53 50 00  01 00 00 00 06 82 00 00
> 
> > Bytes 0 - 7  "NTLMSSP\0"
> > Bytes 8 - 0xB Message number, little endian format (1)
> > Bytes 0xC - 0xF - flags of some kind (unknown - specifies ascii ?).
> 
> negotiation flags?  indicates things, according to the bit-fields in the
> CryptoAPI, like "ENCRYPTION" and "VERIFICATION" and "SIGNING" etc.
> 

Could be anything. I tried to make sense of it 
by looking at unicode vs non-unicode traffic but
there seemed to be no consistancy. The number
I stated seemed to work ok with '95 and NT so
I hardcoded it and left it at that.

Jeremy.


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