Monthly Archives: September 2014

Azure Web Sites support IP restriction in the web config, as demonstrated by Stefan Schackow's MSDN Blog.

I then add the following to my web.config

While this works great for Azure, for local builds, you may encounter:

HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.

Module IpRestrictionModule
Notification BeginRequest
Handler ExtensionlessUrlHandler-Integrated-4.0
Error Code 0x80070021
Config Error This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false".

The culprit was the snippet at theĀ bottom of my applciationHost.config

<location path="" overrideMode="Deny">

Commenting out the entire location tag resolves the issue.