Bas Roovers
Bas Roovers Author of onpremisys and working in IT for over 10 years. Loves good discussions and new technologies.

IIS redirecting made easy

IIS redirecting made easy

Redirecting web traffic in IIS has been done for ages. Most people use the URL Rewrite plugin to achieve this. It provides a relatively easy way to create redirect rules.

Most rules I see are very specific with the exact domain name in the rule and manually created over and over again for each project. Fortunately there are rules crafted in such a way that they can be applied for every website. This saves me a lot of time and hopefully now yours.

Let me share the 2 most commonly used ones:

Prepending www to 2nd level domain names

Credits to Scott Forsyth

<rule name="Prepend www to 2nd level domain names" enabled="true" stopProcessing="true">
    <match url=".*" />
    <conditions trackAllCaptures="true">
        <add input="{HTTP_HOST}" pattern="^([^.]+\.[^.]+)$" />
        <add input="{CACHE_URL}" pattern="^(.+)://" />
    <action type="Redirect" url="{C:2}://www.{C:1}/{R:0}" />


        <rule name="Redirect to https" stopProcessing="true">
          <match url="(.*)"/>
            <add input="{HTTPS}" pattern="off" ignoreCase="true"/>
          <action type="Redirect" url="https://{HTTP_HOST}{REQUEST_URI}" />

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