Protected Distribution System (PDS) Construction

Protected Distribution System (PDS) Construction - Continuously Viewed Carrier

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-245733	CS-04.01.06	SV-245733r769861_rule		High

Description
A PDS that is not constructed and configured as required could result in the undetected interception of classified information. A continuously viewed PDS may not be in a physically hardened carrier and the primary means of protection is continuous observation and control of the unencrypted transmission line. If not maintained under continuous observation an attacker (insider or external) could have an opportunity to tap and intercept unencrypted communications on the exposed cable. REFERENCES: CJCSI 6510.01F, INFORMATION ASSURANCE (IA) AND SUPPORT TO COMPUTER NETWORK DEFENSE (CND), Enclosure C, paragraph 35.c. DoD 5200.22-M (NISPOM), Incorporating Change 2, 18 May 2016 Chapter 5, Section 4, paragraphs 5-402.c. and 5-403 DoD Manual 5200.01, Volume 3, 24 February 2012, SUBJECT: DoD Information Security Program: Protection of Classified Information, Encl 4, para 3.b. and 4.a. NIST Special Publication 800-53 (SP 800-53), Rev 4, Controls: PE-4, SC-7, and SC-8 CNSSI No. 7003, September 2015, Protected Distribution Systems (PDS), Section IV, paragraph 7. and Section X, paragraph 30.e.

Description

A PDS that is not constructed and configured as required could result in the undetected interception of classified information. A continuously viewed PDS may not be in a physically hardened carrier and the primary means of protection is continuous observation and control of the unencrypted transmission line. If not maintained under continuous observation an attacker (insider or external) could have an opportunity to tap and intercept unencrypted communications on the exposed cable. REFERENCES: CJCSI 6510.01F, INFORMATION ASSURANCE (IA) AND SUPPORT TO COMPUTER NETWORK DEFENSE (CND), Enclosure C, paragraph 35.c. DoD 5200.22-M (NISPOM), Incorporating Change 2, 18 May 2016 Chapter 5, Section 4, paragraphs 5-402.c. and 5-403 DoD Manual 5200.01, Volume 3, 24 February 2012, SUBJECT: DoD Information Security Program: Protection of Classified Information, Encl 4, para 3.b. and 4.a. NIST Special Publication 800-53 (SP 800-53), Rev 4, Controls: PE-4, SC-7, and SC-8 CNSSI No. 7003, September 2015, Protected Distribution Systems (PDS), Section IV, paragraph 7. and Section X, paragraph 30.e.

STIG	Date
Traditional Security Checklist	2021-07-14

Details

Check Text ( C-49164r769859_chk )
Interior or Exterior PDS: Continuously viewed Carrier. This is one of five types of Category 2 PDS allowed IAW the CNSSI 7003. Check to ensure: 1. The transmission line is under continuous observation, 24 hours per day, including when non-operational. (CAT I finding) 2. It is separated from all non-continuously viewed circuits ensuring an open field of view. (CAT III finding) 3. The carrier has an SOP that includes the requirement to investigate any attempt to disturb the PDS. The requirement must include that appropriate security personnel investigate the area of attempted penetration within 15 minutes of discovery. (CAT II finding) 4. The PDS is not located within an Uncontrolled Access Area (UAA). (CAT I)

Check Text ( C-49164r769859_chk )

Interior or Exterior PDS: Continuously viewed Carrier. This is one of five types of Category 2 PDS allowed IAW the CNSSI 7003.

Check to ensure:

1. The transmission line is under continuous observation, 24 hours per day, including when non-operational. (CAT I finding)

2. It is separated from all non-continuously viewed circuits ensuring an open field of view. (CAT III finding)

3. The carrier has an SOP that includes the requirement to investigate any attempt to disturb the PDS. The requirement must include that appropriate security personnel investigate the area of attempted penetration within 15 minutes of discovery. (CAT II finding)

4. The PDS is not located within an Uncontrolled Access Area (UAA). (CAT I)

Fix Text (F-49119r769860_fix)
Interior or Exterior PDS: Continuously viewed Carrier. This is one of five types of Category 2 PDS allowed IAW the CNSSI 7003. There are four requirements that must be met for this type of distribution system: 1. The transmission line must be under continuous observation, 24 hours per day (including when non-operational). 2. The transmission line must be separated from all non-continuously viewed circuits ensuring an open field of view. 3. There must be an SOP for those responsible for observation of the carrier that includes the requirement to investigate any attempt to disturb the PDS. The requirement must include that appropriate security personnel investigate the area of attempted penetration within 15 minutes of discovery. 4. The PDS must not be located within an Uncontrolled Access Area (UAA).

Fix Text (F-49119r769860_fix)

Interior or Exterior PDS: Continuously viewed Carrier. This is one of five types of Category 2 PDS allowed IAW the CNSSI 7003.

There are four requirements that must be met for this type of distribution system:

1. The transmission line must be under continuous observation, 24 hours per day (including when non-operational).

2. The transmission line must be separated from all non-continuously viewed circuits ensuring an open field of view.

3. There must be an SOP for those responsible for observation of the carrier that includes the requirement to investigate any attempt to disturb the PDS. The requirement must include that appropriate security personnel investigate the area of attempted penetration within 15 minutes of discovery.

4. The PDS must not be located within an Uncontrolled Access Area (UAA).