How to implement the control:
A secure physical perimeter can be as simple as secure walls, a locked gate or door, and an alarm and CCTV capability for SMEs with offices in which no client data is stored. A secure physical perimeter for a data centre that may store a lot of confidential information is much more complex including controls such as man traps. Your physical security controls will be tested during an information security audit or review, and any gaps in your perimeter controls will be highlighted and their remediation recommended. Risk Ledger recommends [Genium4](https://www.genium4.com/ "Genium4 ") for this service.