Removing the X-Asp.Net version header

By | March 27, 2018

HTTP headers leak technical information to potential attackers about a system. To harden the security of an application you need to disclose as little information about a system as possible. In this post I will show to remove the Asp.net version from HTTP server header responses.

Removing the X-Asp.Net version header

<system.web>
<httpRuntime enableVersionHeader="false" />
</system.web>

Or the following can be used if you want to be explicit about what you are removing

<httpProtocol>
<customHeaders>
<remove name="X-AspNet-Version" />
<remove name="X-AspNetMvc-Version" />
</customHeaders>
</httpProtocol>

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