On Tue, 9 Nov 2004, James Gray wrote:
Read the archives, this has been answered at least 20 times in the last 3 months.
And is also mentioned the squid.conf documentation (proxy_auth acl documentation).
You can NOT use ANY authentication with a transparent proxy. It's a restriction in the HTTP protocol[1].
Actually it is more than a restriction, it is a security requirement that browsers does not blindly trust anyone with proxy user credentials (web servers etc..).
Regards Henrik
