On Feb 5, 5:11 pm, "Steve" <steve.lo... DeleteThis @gmail.com> wrote:
> I'm migrating an application for IIS 5 to IIS 6, and part of the
> application is thousands of cached images - jpgs, gifs and bmps.
> However, they are stored on the server with no file extension - i.e.
> no .jpg, no.gif and no .bmp - they are just stored as coded file names
> such as a4ef0 - which corresponds to a key in the database yada yada
> yada.
>
> Anyway, on IIS5, it seems to read the header of these files fine when
> they are called in an img src=./cache/images/a4ef0 alt=""
> border="0" . However, IIS6 just comes up with a missing image.
> Short of going through and changing the code, database, and thousands
> of images to include a file type extension, where should I be poking
> around in IIS 6 to fix this at the server level and not the code
> level.
>
> Many thanks to anyone who can answer this!
For security reasons, IIS6 does not serve resources without a MIME
Type (it automatically prevents ASP/ASP.Net source disclosure, for
example). Extensionless resources do not have a MIME-Type by default,
so they are not served by default. You will need to manually make the
appropriate security decision -- IIS6 makes it explicit (off-by-
default); IIS5 implicitly allows everything to work (on-by-default) so
that you don't have to configure much to have things work, but history
says that approach does is insecure due to the tremendous attack
surface exposed.
Determine the MIME-Type you used on IIS5, go to the directory of
extensionless resources (such as /cache/images) in IIS Manager UI, and
add that MIME Type there. Then download of extensionless resources
will work.
You can also troubleshoot this by simply looking at the IIS log file
entry for the failing requests, noticing it saying 404 3 50, and
search for a solution to it.
http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library...S/0f4ac
//David
http://w3-4u.blogspot.com
http://blogs.msdn.com/David.Wang
//
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