Re: Proxy auth
Dave Kristol (dmk@research.bell-labs.com)
Thu, 18 Nov 1999 08:46:41 -0500 (EST)
"Josh Cohen (Exchange)" <joshco@Exchange.Microsoft.com> wrote:
> Since we're talking about proxies....
> Im curious to know what others think the right thing
> according to the intent of the 1.1 spec to do is
> in this situation:
>
> If you have two chained proxy servers:
>
> client -> proxy1 -> proxy2 -> origin server
>
> If proxy 2 challenges for proxy-authentication (in its realm),
> should the challenge go back to the client if proxy1 doesnt intend
> to satisfy the challenge ?
>
> My understanding was that the intent was that this situation was
> to be covered. By this I mean a client can auth to a proxy up the chain.
> The spec is somewhat ambiguous, it says the proxy-auth headers are
> hop-by-hop, but then mentions that chained proxy-auth can work.
My understanding has always been that proxy authentication is strictly
hop-by-hop. So proxy1 should not bump the authentication request up to
the client. After all, it's proxy1 that has a trust relationship with
proxy2, whereas the client may have no such relationship.
Dave Kristol