49e3eae4__CAG__Solutions___Qualys__Inc___CAG_Requirements
[Qualys Capabilities] With authenticated and unauthenticated scans, Qualys verifies all open TCP and UDP ports on any system Identifies all systems running DNS, file, mail, web, and database services [CAG Requirements] 
Critical Control 13 Limitation and control of network ports, protocols, and services
Consensus Audit Guidelines (CAG) Solutions | Qualys, Inc.
CAG Requirements