The Video Conferencing (VC) system using A/B, A/B/C, or A/B/C/D switches to support conferences on multiple networks having different classification levels must be based on optical technologies to maintain electrical isolation between the various networks to which it connects.

From Voice Video Policy Security Technical Implementation Guide

Part of SRG-POL-300611

Associated with: CCI-003072

VVSP-01-000167_rule The Video Conferencing (VC) system using A/B, A/B/C, or A/B/C/D switches to support conferences on multiple networks having different classification levels must be based on optical technologies to maintain electrical isolation between the various networks to which it connects.

Vulnerability discussion

The information security architecture at the individual information system level must be consistent with and complement the more global, organization-wide information security architecture that is integral to and developed as part of the enterprise architecture. The information security architecture includes an architectural description, the placement/allocation of security functionality (including security controls), security-related information for external interfaces, information being exchanged across the interfaces, and the protection mechanisms associated with each interface.In addition, the security architecture can include other important security-related information, for example, user roles and access privileges assigned to each role; unique security requirements; the types of information processed, stored, and transmitted by the information system; restoration priorities of information and information system services; and any other specific protection needs.The A/B, A/B/C, or A/B/C/D switch is physically connected to multiple networks having different classification levels. Copper-based switches provide minimal or no electrical isolation due to capacitance between the wires in the switch box and the switch contacts. This can permit information on one network to bleed or leak over to the other network, which can lead to the disclosure of classified information on a classified network to a network of lower classification. This must be prevented. Optical fiber is an insulator, thus it carries no electrical current and generates no electromagnetic field, eliminating the capacitance issue. As such, it provides excellent electrical isolation between the networks to which it connects.

Check content

If the Voice Video system does not support conferences on multiple networks having different classification levels, this is not applicable. Review the Voice Video SSP for the system. Confirm the VC system A/B, A/B/C, or A/B/C/D switch uses optical technologies to maintain electrical isolation between the input port/connection and between all selectable output ports/connections. Validate approved equipment is being used through DISN Video Services (DVS), which maintains a list of A/B, A/B/C, and A/B/C/D switches that have been certified. If the A/B, A/B/C, or A/B/C/D switches are not based on optical technologies to maintain electrical isolation between the input port/connection and between all selectable output ports/connections, this is a finding. If the A/B, A/B/C, or A/B/C/D switch is not certified through DVS, this is a finding.

Fix text

Obtain and install an approved and certified DVS A/B, A/B/C, or A/B/C/D switch. Document the solution in the Voice Video SSP for this system.

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