URL filtering provides visibility and control over web traffic on your network. For improved visibility into web content, you can now configure the URL Filtering Profile to log HTTP header attributes included in a web request. When a client requests a web page, the HTTP header includes the user agent, referer, and x-forwarded-for fields as attribute-value pairs and forwards them to the web server. When enabled for logging HTTP Headers, the firewall logs the HTTP header attribute-value pairs in the URL Filtering logs.
You can enable HTTP Header Logging in six easy steps: