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Physical security
ASD ISMISM-1296

ASD ISM 1296 Protect network devices in public areas

What it says

Physical security is implemented to protect network devices in public areas from physical damage or unauthorised access.

Quoted as published. Everything else on this page is written by Control Stack.

What it means

In plain English

Ensure network devices in public areas are secure from damage and unauthorised access.

This control is about keeping network devices safe when they're in public places, like a lobby or shared office space. The idea is to prevent anyone from damaging them or accessing them without permission. If these devices aren't protected, someone might tamper with them, allowing access to important information or even disrupting the entire network.

Why it matters

If network devices in public areas are not physically secured, they can be tampered with or stolen, causing outages and data compromise.

How to implement

  1. Facilities management should secure network devices by physically mounting them.

    Use lockable cabinets or enclosures to house routers and switches in public areas, making sure they are firmly attached to walls or secure surfaces.

  2. IT staff should regularly check that security measures are intact.

    Schedule monthly inspections to ensure devices remain securely housed and that locks or other securing mechanisms have not been tampered with.

  3. Office managers should limit physical access to network devices.

    Place devices in areas that are monitored by cameras or in areas only accessible to authorised personnel, such as locked rooms or behind reception desks with staff present.

  4. The IT team should install surveillance cameras to monitor devices.

    Position cameras to clearly view all devices in public spaces, ensuring recordings are regularly reviewed and stored according to your organisation's security policy.

  5. Procurement should purchase tamper-evident seals for devices.

    Apply seals to entry points on network devices to easily identify if someone has attempted to open or tamper with them.

Keep it running

Regularly inspect locks, cabinets and mounting for public-area network devices, and promptly repair damage to prevent tampering or unauthorised access.

Evidence and audit

  1. Check 1 of 5What an auditor asks for

    Ask for

    Inspection logs: Request monthly inspection reports from the IT team.

    Look at

    Dates, any issues noted, and resolution actions.

    Good evidence

    Is a log showing inspections occurred as planned, with any issues promptly addressed.

  2. Check 2 of 5What an auditor asks for

    Ask for

    Camera footage access: Request access to surveillance footage covering public network devices.

    Look at

    The quality and coverage of the footage and retention schedule.

    Good evidence

    Includes recent footage with clear resolution and documented storage routines.

  3. Check 3 of 5What an auditor asks for

    Ask for

    Access records: Request logs of who has access to the areas where the devices are located.

    Look at

    Entries that demonstrate limited and controlled access.

    Good evidence

    Record shows only approved personnel have had access, with documented sign-ins or electronic access logs.

  4. Check 4 of 5What an auditor asks for

    Ask for

    Records of security incidents: Request documentation of any security incidents involving network devices in public areas.

    Look at

    Incident details, how each was addressed, and follow-up actions.

    Good evidence

    Details no incidents, or if incidents occurred, they were resolved with corrective measures taken.

  5. Check 5 of 5What an auditor asks for

    Ask for

    Purchase records of security equipment: Request documents relating to procurement of locks, cabinets, and surveillance systems.

    Look at

    Descriptions of equipment bought and how it has been deployed.

    Good evidence

    Shows purchased items have been installed as planned and are in use.

Mappings

Closest match in ISO/IEC 27001: A.7.3, Physical security for offices and facilities, which this control partially meets.

ISO 27001

ISO/IEC 27001: 7 mappings

  • A.7.1Physical security perimetersPartially overlaps
  • A.8.20Network and network devices securityPartially overlaps

Mappings show how controls relate across frameworks. They do not imply full equivalence or certification.