[isalist] Re: ISA, Host Headers and CSS
- From: <mick.mason@xxxxxxxxxxx>
- To: <isalist@xxxxxxxxxxxxx>
- Date: Fri, 6 Oct 2006 14:32:40 +0100
Thanks for the response Jim.
This isn't how it's going to be setup in our Live environment, there
isn't an ISA server, it's another Firewall product that I have nothing
to do with, but my hands are tied with the configuration of our Dev
environment.
Even without the ISAPI filter, I experience the same problems (this also
occurs in other pure .NET/MS applications such as MS CMS and straight
ASP.NET pages.). A site published through ISA is returned without any
CSS. Turning on the the 'Original host header' option resolves this. I
know less than zero about why the host headers would affect CSS so it's
just a blind solution at the moment, and no-one else seems to have
experienced any web publishing/CSS problems if my Google searches are
anything to go by.
If I use the ISAPI filter, but from 'behind' the firewall, the problem
doesn't occur. I have a baseless, uneducated hunch that it is to do
with the ISAPI filter also changing the header, but as I'm ignorant
about the real role of headers in all of this, I am unable to
troubleshoot the steps involved.
M
________________________________
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
On Behalf Of Jim Harrison
Sent: 06 October 2006 14:17
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: ISA, Host Headers and CSS
"IIS server which is running a proxy filter"...
I think you just answered your own question.
How does this filter interpret the request data?
ISA isn't removing anything (really; I promise), but it appears that
your web app needs the host header to represent the user's , not the ISA
request.
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
On Behalf Of mick.mason@xxxxxxxxxxx
Sent: Friday, October 06, 2006 3:16 AM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] ISA, Host Headers and CSS
Hi,
Can anyone give me a brief explanation of why ISA strips the CSS from
some of my published sites?
If I enable the 'original host headers' option, it works Ok. I have a
setup where requests go through ISA server, to an IIS server which is
running a proxy filter, that then forwards requests to either IIS sites
or another web server instance (Plone) running on the same server on a
different port.
This is a dev environment that mirrors our live, with the exception of
the ISA server. If I try to access a URL through the publishing rule,
that is actually served up by Plone (via the IIS ISAPI filter), the page
is returned but the CSS is removed. If I try the same thing inside the
dev environment (I.E. bypassing ISA) it works fine.
Any help would be much appreciated.
Thanks
Mick
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