PE-4

PE-4 ACCESS CONTROL FOR TRANSMISSION MEDIUM

Overview

Number	Title	Impact	Priority	Subject Area
PE-4	Access Control For Transmission Medium	MODERATE	P1	Physical And Environmental Protection

Instructions
The organization controls physical access to Assignment: organization-defined information system distribution and transmission lines within organizational facilities using Assignment: organization-defined security safeguards.

Guidance
Physical security safeguards applied to information system distribution and transmission lines help to prevent accidental damage, disruption, and physical tampering. In addition, physical safeguards may be necessary to help prevent eavesdropping or in transit modification of unencrypted transmissions. Security safeguards to control physical access to system distribution and transmission lines include, for example: (i) locked wiring closets; (ii) disconnected or locked spare jacks; and/or (iii) protection of cabling by conduit or cable trays.

Guidance

Physical security safeguards applied to information system distribution and transmission lines help to prevent accidental damage, disruption, and physical tampering. In addition, physical safeguards may be necessary to help prevent eavesdropping or in transit modification of unencrypted transmissions. Security safeguards to control physical access to system distribution and transmission lines include, for example: (i) locked wiring closets; (ii) disconnected or locked spare jacks; and/or (iii) protection of cabling by conduit or cable trays.

Enhancements