Prevent default.aspx addition

How can I pr开发者_运维问答event browsers to add portal/default.aspx to my url string?

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You need to change the default document in IIS Admin as described here:

http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/dc6eb1b4-9028-4308-9935-52b64edfad36.mspx?mfr=true

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I've solved the problem. It seems that browsers change URI because of "Server: Microsoft IIS 6" header. All started to work normally after I've got rid of it (via URLScan tool)