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Security Perimeter

What is Security Perimeter?

The boundary of the area where security controls are applied to protect internal resources from external threats.

Information Security

Frameworks that govern security perimeter

ISO 27001:2022View framework →NIST Cybersecurity Framework 2.0View framework →CIS Controls v8View framework →

What the standards actually require on security perimeter

Requirements naming security perimeter across 6 standards, quoted from the control text.

NERC CIP2 controls

Establish Electronic Security Perimeters (ESPs) per CIP-005-7 including identification of all external connections + Electronic Access Points (EAPs) + denial of communications by default + restrictions on inbound and outbound permitted communications + dial-up...

NERCCIP-3 · Electronic Security Perimeters + Control Center Communications (CIP-005 + CIP-012) →
ISO 27001:20221 control

Define and use security perimeters to protect areas holding information and assets.

iso-27001-2022::7.1 · Physical security perimeters →
ISO 27002:20221 control

Requires security perimeters to be defined and used to protect any area holding information and the assets associated with it.

iso-27002-2022::7.1 · Physical security perimeters →
ISO/IEC 27011:20241 control

Physical security for telecommunications facilities including exchanges, data centers, and cell sites

27011-7.1 · Physical security perimeters →
Cloud Security Alliance Cloud Controls Matrix (CCM) v4.0.11 control

Build physical security perimeters around people, data and systems, including a perimeter separating administrative and business areas from data storage and processing areas.

CCM-DCS-07 · Controlled Access Points →
IEEE 16861 control

Section 5.1 establishes electronic access account management capabilities required of IEDs. Per public IEEE 1686 + IEEE Std abstract + vendor capability statements (full IEEE text NOT reproduced): individual user accounts with unique identification (5.1) + no...

IEEE1686-Section5.1-AccessControl-Accounts-Roles-Password-Session-Remote · IEEE 1686 Section 5.1 - Electronic Access Account Management + Roles + Password + Failed Login + Session + Remote Access + Personnel →

Questions people ask about security perimeter

What is Security Perimeter?
The boundary of the area where security controls are applied to protect internal resources from external threats.
Why is Security Perimeter important for compliance?
Security Perimeter is a key concept in Information Security. Understanding security perimeter helps organizations meet regulatory requirements, reduce risk, and demonstrate due diligence during audits. Our compliance platform maps 686 frameworks with 311K cross-framework control mappings.
Which compliance frameworks address Security Perimeter?
Security Perimeter appears in the requirement text of NERC CIP, ISO 27001:2022, ISO 27002:2022, ISO/IEC 27011:2024, Cloud Security Alliance Cloud Controls Matrix (CCM) v4.0.1. Across these standards we have identified 7 controls that name it directly, each linked to the control text on the compliance platform.
Where can I learn more about Security Perimeter?
Explore our compliance framework pages to see how security perimeter applies across different standards and regulations. Our implementation guides provide step-by-step guidance, and the compliance platform offers AI-powered analysis of how this concept maps across 686 frameworks.

See how Security Perimeter applies across compliance frameworks

Our platform maps 686 frameworks with 311K cross-framework control mappings. Explore how this concept is addressed across standards.

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Written and maintained by Gerard Blokdyk, The Art of Service.