Applies to all Barracuda Web Application Firewalls.
To log the actual client IP instead of the VIP of the Barracuda Web Application Firewall in the IIS logs, install the x-forwarded-for DLL on the IIS 7server. By default, the WAF forwards the clients IP address as the header X-Forwarded-For:
- Open IIS Manager and navigate to the level you want to manage.
- In Features View, on the server or site Home page, double-click ISAPI Filters.
- Add the X-Forwarded-For dll file from the XForwardedFor2008.zip file. Make sure you choose the correct processor.
- Restart the WWW services on the IIS server.
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