How to set different Timeouts for different URLs in ASP.NET

I want different connection limits for some URLs in my application. Some URLs accept file uploads and need to have a large Connection Timeout. All other URLs need a much smaller timeout to prevent denial of service and not waste resources.

Currently I have the Connection Timeout property in IIS set for the entire site to 60 minutes. Then I did this in the web.config:

<system.web>
    <httpRuntime executionTimeout="480" maxRequestLength="1024" />
</system.web>

<location path="FileUpload/WriteFile.rails">
    <system.web>
        <httpRuntime executionTimeout="3600" maxRequestLength="512000" />
    </system.web>
</location>

So i was hoping this would set all URLs to an 8 minute timeout and allow the WriteFile.rails URL to run for 60 minutes. Instead ALL URLs are allowed to run for 60 minutes. How do I get IIS to do what I want?