How do I configure the built-in URLscan to IIS 6?

Hello All,

There's all this talk about IIS 6 being more secure, and having many of the URLscan functionality built-in. A good thing. BUT, I've noticed I can't download *.log even though they have permission to download. How can I configure what can and cannot be changed? This server does not have IIS Lockdown 2.5 or a directory for URLscan under  C:\WINDOWS\system32\inetsrv . The directory and files have the IUSR account with read permissions.

The general error received:
HTTP Error 404 - File or directory not found.
Internet Information Services (IIS)

Thanks,
-Ben
bserebinAsked:
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Dave_DietzCommented:
You need to add a MIME type for it.

I believe this would be under the HTTP Headers tab of the site properties.

Add an entry of log with a type of application/octet-stream and you should be good to go.

Dave Dietz
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bserebinAuthor Commented:
Hello Dave,

Thanks for the reply (I'll try it), but I'm really looking to know what other files are blocked. Under URLscan, the ini file listed what extensions were blocked, does this exist for IIS 6?

Thanks,
-Ben
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af500Commented:
by default, all unknown mime types are blocked.

what version of URL scan? the built in (2.0) or the latest (2.5)?
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bserebinAuthor Commented:
Hello af500,

Oh... unknown mime types are blocked. That's a pain since I let users upload files and then enable directory browsing for downloading. This makes it difficult. Maybe, I should install URLscan 2.5 and then only block what I specify. Anyway to disable that feature in IIS 6, blocking of unkown mime file types?

As per what version is built-in to IIS 6, not sure.

Thanks,
-Ben
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Dave_DietzCommented:
There really isn't a 'version' of URLScan built into IIS 6.0 - it simply incorporates a number of the features that URLScan provides for IIS 5.

You can install URLScan 2.5 on IIS 6.0 for a couple added features such as URL Sequence blocking and Server Banner suppression.

In any case, there is no way to disable MIME type blocking in IIS 6.0, but you can bypass it by adding a MIME type of * with a type of application/octet-stream.  This will provide a default MIME type for all files that don't have one.

Dave Dietz
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bserebinAuthor Commented:
Hello Dave,

Awesome, it's perfect, down to the exact directory I want to allow all unknown files, but maintain security for my Exchange directories. Perfect.

Thanks and you (Dave_Dietz) get all the point,
-Ben
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