STIGQter STIGQter: STIG Summary: Traditional Security Checklist Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

Protected Distribution System (PDS) Construction - Continuously Viewed Carrier

DISA Rule

SV-245733r1138400_rule

Vulnerability Number

V-245733

Group Title

CS-04.01.06

Rule Version

CS-04.01.06

Severity

CAT I

CCI(s)

Weight

10

Fix Recommendation

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).

Check Contents

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)

Vulnerability Number

V-245733

Documentable

False

Rule Version

CS-04.01.06

Severity Override Guidance

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 Content Reference

M

Target Key

5410