Topic: Connecting to an Upstream proxy

[rusddso]

I am using CentOS Linux 6.x and I need to configure a proxy on my local machine to use an upstream proxy (installed on another machine). The upstream proxy requires Digest/NTLM authorization. I want the local proxy to deal with the upstream proxy's authorization details and provides authorization free access to users that connect to it through my local proxy.

Users (1 ..n) -> LocalProxy(no auth) -> UpstreamProxy(Digest/NTLM auth) -> Customer n/w

This is easy to do when the upstream proxy uses Basic Auth but I don't see how to do it for Digest/NTLM Auth. I need a command line solution for my local proxy and I was curious if Apache can do the job.

I don't need to configure the upstream proxy (that's already provided). I need to be the local (intercepting type ) proxy that adds auth credentials to an incoming http request and pass it upstream.

Any ideas ? If yes, what module in Apache should I be looking into ?

Thanks,
Russel

[James Blond]

Since the Users do not need to authenticate on the first server ( proxy) I wonder why there has to be authentication on the next proxy.

[rusddso]

The reason is we are trying to get multiple users send their traffic out through a single proxy, so that we have better control on what's going out and also if we have to route traffic to different upstream proxies, it is much easier than having every user change their settings.

The upstream proxy auth requirement is not what we want or need but when connecting to other networks they have a requirement that authentication be enforced. From our perspective its easier to have this done on one machine than having to distribute credentials of the upstream proxy to multiple users. Hence the requirement.

[James Blond]

Wouldn't it be easier to allow certain IP adresses at the upstream proxy so you don't need the auth over NTLM ?