Title

The Unified Communications Session Manager must only use ports, protocols, and services allowed per the Ports, Protocols, and Services Management (PPSM) Category Assurance List (CAL) and Vulnerability Assessments (VAs). (Cat I impact)

Discussion

In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must disable or restrict unused or unnecessary physical and logical ports/protocols on information systems. Network elements are capable of providing a wide variety of functions and services. Some of the functions and services provided by default may not be necessary to support essential organizational operations. Additionally, it is sometimes convenient to provide multiple services from a single component (e.g., VPN and IPS); however, doing so increases risk over limiting the services provided by any one component. To support the requirements and principles of least functionality, the network element must support the organizational requirements providing only essential capabilities and limiting the use of ports, protocols, and/or services to only those required, authorized, and approved to conduct official business or to address authorized quality of life issues.

Check Content

Verify the Unified Communications Session Manager only uses ports, protocols, and services allowed per the PPSM CAL and VAs. If the Verify the Unified Communications Session Manager uses ports, protocols, and services other than those permitted by the PPSM CAL and VAs, this is a finding.

Fix Text

Configure the Unified Communications Session Manager to only use of ports, protocols, and services allowed per the PPSM CAL and VAs.

Additional Identifiers

Rule ID: SRG-NET-000132-VVSM-00101_rule

Vulnerability ID: SRG-NET-000132-VVSM-00101

Group Title: SRG-NET-000132-VVSM-00101

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.