On 9/16/2010 12:03 PM, Denis Kudriashov wrote:
> Thank you, Andreas for response.
>
> I really prefer 1) option. I hate C stuff.
> I examine VW code for NTLM and It's not really difficult.

Could be. My reason to go with option 2) was that doing it this way gets 
you Kerberos authentication (Negotiate/SPNEGO) for free, which was a 
customer requirement for our deployments.

Cheers,
   - Andreas

>
> And maybe I can use CurlPlugin for that. It's will be more simple
> solution for me
>
> 2010/9/16 Andreas Raab <andreas.raab at gmx.de <mailto:andreas.raab at gmx.de>>
>
>     On 9/16/2010 5:43 AM, Denis Kudriashov wrote:
>
>         Is WebClient supports proxy NTLM authentication?
>
>
>     It doesn't.
>
>
>         If not Can you advise me how two implement it?
>
>
>     You have basically two options:
>     1) Implement it from scratch. There are a number of resources that
>     describe NTLM in detail (basically reverse-engineered since there's
>     no official documentation), for example:
>
>     http://www.innovation.ch/personal/ronald/ntlm.html
>
>     2) Implement it via a plugin using the Microsoft SSP interface. Your
>     starting point would be here:
>
>     http://msdn.microsoft.com/en-us/library/aa375512%28VS.85%29.aspx
>
>     FWIW, we went for option #2 in our products; the authentication part
>     is tricky (lots of details) but straightforward in principle (i.e.,
>     you basically call InitializeSecurityContext twice and are done).
>
>     Cheers,
>       - Andreas
>
>
>
>
>