On Wed, Jun 29, 2005 at 09:53:07AM -0700, David Parks wrote:
> Hi all,
> I am trying to authenticate to a server via a proxy which also requires 
> authentication. It seems that I can get either the proxy authentication to 
> work OR the site authentication to work, but not both.
> 
> Both seem to work independently when I set the credentials (or proxy 
> credentials) using NTCredentials (e.g. if I connect to the site from a 
> network not using a proxy I can get it to work, and I can authenticate to the 
> proxy only to get a 401 authentication failed from the server when using the 
> proxy).
> 
> I read in the Authentication tutorial that you can't authenticate using NTLM 
> to both the proxy and site, so I'm trying various combinations of 
> authentication, but I can't find any documentation that specifically covers 
> this case and I feel like I'm just taking stabs in the dark right now.

David,

You _really_ can't use NTLM to authenticate with the proxy and the
target host at the same, due to the nature of this authentication
scheme. Really. That was not a joke.

Please consider using one of the following combinations instead:

(1) BASIC proxy + NTLM host if both the clent and the proxy are within a
trusted network segment

(2) NTLM proxy + SSL + BASIC host

Both combinations should provide an adequate (or better in the latter case)
security

Hope this helps

Oleg

> 
> If anyone can point me in the direction of the light at the end of the tunnel 
> I'd really appreciate it.
> 
> Thanks,
> David
> 
> 
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