NAC deployments fail when organizations try to do everything at once. This five-step methodology provides a structured, incremental approach that delivers value at each stage.
- Discover and inventory. Deploy in monitor-only mode. Use the NAC system’s discovery capabilities to build a complete inventory of every device connecting to your network, including device type, OS, antivirus status, and patch level.
- Define policy. Based on your discovery findings and business requirements, define specific, measurable compliance policies. Start conservative — policies that are clearly correct and affect few edge cases.
- Test enforcement. Enable enforcement in a lab or on a small, low-risk network segment. Test enforcement policies exhaustively and develop exception handling procedures before expanding.
- Deploy to production. Roll out enforcement progressively — starting with guest networks, then contractor access, then managed employee devices. Communicate changes to users in advance and provide clear remediation guidance.
- Monitor and optimize. Track key metrics: compliance rate, time-to-remediate, exception volume. Use this data to continuously refine policies and address root causes of non-compliance.