Palo Alto Networks, Inc.
Hierarchical scanning of internet connected assets

Abstract:

Hierarchical scanning begins with communicating probes over the Internet to ports and networks addresses to determine publicly accessible devices. Based on responses to those probes, follow-up probes are determined to obtain additional information about the publicly accessible devices. The probes are transmitted from a system that is external to the networks corresponding to the network addresses. This provides an external view of the scanned networks and facilitates a probing paradigm that scales beyond a few networks.