Scanning WAN environment
For a Wide Area Network (WAN) such as an organization distributed across various geographical locations, two methods of scanning mechanism can be put to practice
Distributed Asset Scan
This method involves a Remote AE server to be installed in each geographical location to scan and maintains all the workstations, and user information of the respective sites. The data from the Remote AE Server is pushed to the Central AE Server either manually or by scheduling the data periodically.
Open the Firewall ports between the sites.
To know more on this section refer Ports used for scan.