Re: Forcing MSIE to re-authenticate with proxy each time it star

From: Jussi Torhonen <>
Date: Wed, 6 Aug 1997 13:51:45 +0200

On 6 Aug 97 at 3:41, wrote:

> I'm using Squid 1.1.11 on Solaris 2.5.1 with the acl_proxy_auth_patch
> 1.1.11 applied (and compiled in).
> All Internet access from our site has to be approved by management,
> hence the use of Proxy Authorisation ACLs.
> I want to force MSIE (Microsoft Internet Explorer) users to not be able
> to cache their Proxy Authenticate username/password combos in their
> password file (username.PWL in C:\WINDOWS), so they can't select the
> "Save this password in your password list" box.

MS document says:

"Internet Explorer caches the password information in the
<Username>.pwl file. However, because the Microsoft Client for
  Microsoft Networks handles all password caching, the password cannot
  be cached and the option is not available if the Microsoft Client
  for Microsoft Networks is not installed."

If you disable password caching (ie usage of .PWL files) completely
as described in
Win95 & MSIE should not cache the passwords any more. I haven't test
this, but it's easy to give it a try. With MS network (local NT
servers) it works fine (tested), but with MSIE I cannot say yet.

BTW, the latest Squid is 1.1.14 and acl_proxy_auth patch is available
for it as well. See
The patch expands Squid proxy_auth administration amazingly ! We use
it too.


Jussi Torhonen / Internet:
Tietosavo Oy / X.400: C=fi, ADMD=elisa, PRMD=tsnet,
P.O.Box 1582 / O=tietosavo, S=torhonen, G=jussi
FINLAND / Tel: +358-17-193 231, Fax: +358-17-193 355
Received on Wed Aug 06 1997 - 03:59:50 MDT

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