aspnet2securityfaq0069

Question: How do I lock configuration settings?

Answer:

To lock the configuration settings for all the Web applications on a Web server to prevent an individual application from overriding them, place the configuration settings inside a <system.web> element nested within a <location> element in the machine-level Web.config file, and then set the allowOverride attribute to false.
The following example enforces the use of Windows authentication for all Web applications on the server.

		 <location allowOverride="false">
		  <system.web>
		    <authentication mode="Windows"/>
		  </system.web>
		 </location>

If you need to apply and lock settings for a specific Web application, use the path attribute on the <location> element to identify the Web application as shown here.

		 <location path="Default Web Site/VDirName">
		  <system.web>
		    <authentication mode="Windows"/>
		    <identity impersonate="false"/>
		  </system.web>
		 </location>

If you specify the path, it must be fully qualified and include the Web site name and virtual directory name.
Important: If it is critical that there are no cross-application breaches, then it better to configure the web.config file in the /VDirName for locking the configuration instead of using path attribute to lock the specific web application.

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