MS IE 5.00 was a flawed release, that MS very quickly (4 weeks) replaced
with 5.01, mainly for security reasons. You should be able to get any
reasonable users (corporate or otherwise) to upgrade asap. MSIE 5.00 has
some serious bugs when using SSL and cacheing, so you may be able to
tweak all your users caching settings, and also to look at making your
pages non-cacheable. I have to say though that in our experience with a
group of 10 users of 5.00 it was far easier to get them to switch to
Netscape until their 5.01 (in fact they went for 5.5) to arrive.

The more SSL connections that are used, the more likely that failures
will occur - in downloading stylesheets, javascript, images etc, leading
to odd bugs and ugly pages.


The problems you describe with 5.01, I have seen when SSL keepalive
settings were enabled on the web-server. The SSLKeepAlive settings were
invented to speed up a clients access to your site, so that as
subsequent requests for images, css, etc etc were made, the SSL
negotiation overhead was short-circuited. Unfortunately the MS 5.xx
browsers never quite got it right. We use Apache, and this is the
setting in httpd.conf
  SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown
downgrade-1.0 force-response-1.0

You can check your SSL logs to see if the keepalive settings are active
- it they are you will see an incrementing number associated with each
request from the same user that indicates the SSL negotiation was
short-cut, and that previously negotiated keys are being used.

'nokeepalive' is fractionally slower, but at least your users will not
get the regular 'page cannot be found' issue.

As to sharing Client Certs between IE and NS - we do this happily for NS
4.0-4.75 and MSIE 5.01-6.0 without any issues.


Regards
Jeff




-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Louis Sabet
Sent: 17 May 2002 13:29
To: [EMAIL PROTECTED]
Subject: IE 5.00 - 5.01 SSL Connection Failures


Hi List,

I work for a mobile phone retail company in the UK - www.mobiles.co.uk

Recently we discovered that several of our customers were unable to
complete the secure portions of their orders. The only common factor
with all these problems were that all customers were using IE 5.00 to IE
5.01.

Under Internet Explorer they receive "Page Connot Be Found". With
Netscape all works fine, and with all other recent Internet Explorer
versions, a successful connection can be made.

I found nothing useful on the Microsoft site other than this:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;q244302

It may be the root of the problem, but we cannot ask the 33% of our
customers who use IE5 to patch their machines before accessing our site.

It is obvious that MOST connections to https sites can be made from IE5,
or it would have been better documented.

I contacted Verisign to find out if there was a reason some certificates
were useable with IE5, and others weren't, but I found their technical
support to be quite useless.

My last option is to ask you guys whether this could be a configuration
issue - or whether there is some configuration tweak I can make to get
around this problem for our IE5 users.

Best regards,

Louis

-- 
Louis Sabet <[EMAIL PROTECTED]>
http://www.webtedium.com/


______________________________________________________________________
Apache Interface to OpenSSL (mod_ssl)                   www.modssl.org
User Support Mailing List                      [EMAIL PROTECTED]
Automated List Manager                            [EMAIL PROTECTED]


______________________________________________________________________
Apache Interface to OpenSSL (mod_ssl)                   www.modssl.org
User Support Mailing List                      [EMAIL PROTECTED]
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