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This section of the ISM provides guidance on cable labelling and registration.

Applicability

This section is applicable to all domestic facilities. For deployable platforms or facilities outside of Australia, consult the emanation security section of these guidelines.

Conduit label specifications

Conduit labels should be a specific size and colour to allow for easy identification of secure conduits carrying cables.

Security Control: 0201; Revision: 2; Updated: Sep-18; Applicability: TS
Labels for TOP SECRET conduits are a minimum size of 2.5 cm x 1 cm, attached at 5 m intervals and marked as ‘TS RUN’.

Security Control: 0202; Revision: 2; Updated: Sep-18; Applicability: TS
Conduit labels in areas where uncleared personnel could frequently visit have red text on a clear background.

Security Control: 0203; Revision: 2; Updated: Sep-18; Applicability: TS
Conduit labels in areas that are not clearly observable have red text on a white background.

Installing conduit labelling

Conduit labelling in public or visitor areas could draw undue attention and disclose capabilities.

Security Control: 0204; Revision: 2; Updated: Sep-18; Applicability: O, P, S, TS
Conduit labels installed in public or visitor areas do not draw undue attention from people who do not have a need-to-know of the existence of such cables.

Labelling wall outlet boxes

Clear labelling of wall outlet boxes diminishes the possibility of incorrectly attaching ICT equipment of a lower classification to the wrong wall outlet box.

Security Control: 1095; Revision: 3; Updated: Dec-19; Applicability: O, P, S, TS
Wall outlet boxes denote the classification, cable identifiers and wall outlet box identifier.

Labelling cables

Labelling cables with the correct source and destination information minimises the likelihood of cross-patching and aids in fault finding and configuration management.

Security Control: 1096; Revision: 2; Updated: Oct-19; Applicability: O, P, S, TS
Cables are labelled at each end with sufficient source and destination details to enable the physical identification and inspection of the cable.

Cable labelling process and procedures

A well documented and followed cable labelling process, and supporting cable labelling procedures, makes cable fault finding easier.

Security Control: 0206; Revision: 5; Updated: Aug-19; Applicability: O, P, S, TS
A cable labelling process, and supporting cable labelling procedures, is developed and implemented.

Cable register

Cable registers allow installers and inspectors to trace cables for cable inspections and malicious or accidental damage. Cable registers track all cable management changes throughout the life of the system.

Security Control: 0208; Revision: 3; Updated: Dec-19; Applicability: O, P, S, TS
A cable register is maintained with the following information:

  • cable identifier
  • classification
  • source
  • destination
  • site/floor plan diagram
  • seal numbers (if applicable).

Cable inspections

Cable inspections, at predefined periods, are a method of checking the cable management system with the cable register.

Security Control: 0211; Revision: 4; Updated: May-20; Applicability: O, P, S, TS
Cables are inspected for inconsistencies with the cable register at least annually.