IIS7 URL Rewrite - Checking for X-Forwarded-For header

Question

I am pretty familiar with IIS and URL Rewrite but I just got a task which stumped me. I need to check each request for the presence of the X-Forwarded-For HTTP header and, depending on its presence, redirect the request.

How can I check for this header?

Answer 1

Try something like the following:

<rewrite> <rules> <rule name="RedirectBasedOnForwardedFor" patternSyntax="Wildcard" stopProcessing="true"> <match url="*" /> <conditions> <add input="{HTTP_X_Forwarded_For}" pattern="insert your pattern here" /> </condiations> <action type="Redirect" url="/newurl/" /> </rule> </rules> </rewrite>