SC-40—Wireless Link Protection
>Control Description
>Control Enhancements(4)
>Cross-Framework Mappings
>Supplemental Guidance
Wireless link protection applies to internal and external wireless communication links that may be visible to individuals who are not authorized system users. Adversaries can exploit the signal parameters of wireless links if such links are not adequately protected. There are many ways to exploit the signal parameters of wireless links to gain intelligence, deny service, or spoof system users.
Protection of wireless links reduces the impact of attacks that are unique to wireless systems. If organizations rely on commercial service providers for transmission services as commodity items rather than as fully dedicated services, it may not be possible to implement wireless link protections to the extent necessary to meet organizational security requirements.
>Related Controls
>Assessment Interview Topics
Questions assessors commonly ask
Process & Governance:
- •What policies govern the implementation of wireless link protection?
- •How are system and communications protection requirements defined and maintained?
- •Who is responsible for configuring and maintaining the security controls specified in SC-40?
Technical Implementation:
- •How is wireless link protection technically implemented in your environment?
- •What systems, tools, or configurations enforce this protection requirement?
- •How do you ensure that wireless link protection remains effective as the system evolves?
Evidence & Documentation:
- •What documentation demonstrates the implementation of SC-40?
- •Can you provide configuration evidence or system diagrams showing this protection control?
- •What logs or monitoring data verify that this control is functioning correctly?
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