What does this report tell me?
The Internal URLs Report provides a list of external IP Addresses which visited web sites on your internal network.

• IP Address - This column shows the external IP address of the computer that visited your internal Host domain. Click on the IP address link to view a reverse DNS lookup of the IP Address.
• Host - This column shows the internal domain visited. Click the Host link to view the site in a new browser window.

Internal URLs Report - online Help

Traffic Classification Object (C and R) - online Help