Re: proxy_auth vs. http_authentication ?

From: Henrik Nordstrom <>
Date: Fri, 29 Jan 1999 00:26:49 +0100

Christoph Adomeit wrote:

> The squid.conf states that proxy_auth does not work correctly
> when using transparent proxying.

Yes. This is a limitation of HTTP and not Squid.

HTTP has two authentication methods:
1. WWW authentication. This is what WWW servers uses to ask the user to
authenticate themselves to the server. A proxy can't use this as it is
needed by the origin servers.
2. Proxy authentication. This is what proxy servers uses, and is only
valid if the browser sent a proxy request.

> Is this info still true ? Is there a workaround for this ?

Squid can be forced into authenticating accelerated requests, but this
is intended for accelerators and not transparent proxies. If you do this
on a transparent proxy then your users will be very upset when they
can't log in to their internet servers.

> I would like to use a combination of proxy_auth and transparent
> proxying to implement an URL-Filter.

Not a good idea. See above.

Henrik Nordstrom
Spare time Squid hacker
Received on Thu Jan 28 1999 - 17:02:33 MST

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