implementing-nerc-cip-compliance-controls

# Implementing NERC CIP Compliance Controls ## When to Use - When a registered entity must achieve or maintain NERC CIP compliance for BES cyber systems - When preparing for a NERC CIP compliance audit by the Regional Entity - When implementing the 2025 CIP standard updates (CIP-003-9, CIP-005-7, CIP-010-4, CIP-013-2) - When categorizing BES cyber systems after commissioning new generation, transmission, or control center assets - When developing a compliance monitoring and evidence collection program **Do not use** for non-BES industrial systems (see implementing-iec-62443-security-zones), for general IT compliance frameworks (see auditing-cloud-with-cis-benchmarks), or for physical security of substations without cyber components. ## Prerequisites - Understanding of NERC CIP standards (CIP-002 through CIP-014) - BES cyber system inventory with impact ratings (high, medium, low) - Access to Electronic Security Perimeter (ESP) network diagrams and firewall configurations - Compliance management system for evidence collection and audit documentation - Familiarity with NERC Glossary of Terms (BES Cyber Asset, BES Cyber System, Electronic Access Point) ## Workflow ### Step 1: Categorize BES Cyber Systems (CIP-002-5.1a) Identify and categorize all BES cyber systems based on their impact to the reliable operation of the Bulk Electric System. ```python #!/usr/bin/env python3 """NERC CIP BES Cyber System Categorization Tool. Implements CIP-002-5.1a categorization criteria ...