A.8.21 Security of network services | ISO 27001 Control

Purpose

To ensure the security of network services and the information they carry.

Implementation Guidance

Define security requirements for network services

Implement security controls for network services

Monitor network service availability and performance

Review and update service level agreements

Test security of network services regularly

Recommended Tools

Cloudflare

Global CDN with WAF and DDoS protection. Essential security layer for web applications.

BetterStack

Modern uptime monitoring and incident management. Great UX and affordable pricing for startups.

UptimeRobot

Simple and reliable uptime monitoring. Perfect for basic availability monitoring.

ISO 27001 Services from the Directory

These providers can help you implement A.8.21 and achieve ISO 27001 certification.

Advisera

Provider of ISO 27001 documentation, training, and consultancy services to help businesses achieve compliance.

Anecdotes

Enterprise agentic GRC platform with 230+ integrations and 40+ pre-mapped frameworks for Fortune 500 compliance programs.

Arrow Cyber Advisors

Arrow Cyber Advisors enables organizations to build measurable cybersecurity maturity and resilience. We specialize in governance, risk and compliance advisory, providing clear security direction, maturity benchmarking, and execution support tailored to regulated and high-risk environments.