Home » Network Compliance: PCI DSS, ISO 27001, NIST, SOC 2, Audit Preparation และ Compliance Automation
Network Compliance: PCI DSS, ISO 27001, NIST, SOC 2, Audit Preparation และ Compliance Automation
Network Compliance: PCI DSS, ISO 27001, NIST, SOC 2, Audit Preparation และ Compliance Automation
Network Compliance ทำให้ network เป็นไปตามมาตรฐานและข้อกำหนดด้านความปลอดภัย PCI DSS สำหรับระบบที่รับชำระเงิน, ISO 27001 มาตรฐานสากลด้าน information security, NIST framework จาก US government, SOC 2 สำหรับ service providers, Audit Preparation เตรียมความพร้อมรับการตรวจสอบ และ Compliance Automation ใช้เครื่องมืออัตโนมัติลดภาระงาน
Network compliance ไม่ใช่แค่ “ทำเพื่อผ่าน audit” แต่เป็นการสร้าง security posture ที่แข็งแกร่ง: องค์กรที่มี compliance program ที่ดีมี breach น้อยกว่า 50% เทียบองค์กรที่ไม่มี (Verizon DBIR) ค่าปรับ non-compliance สูงมาก: PCI DSS $5,000-100,000/เดือน, GDPR สูงสุด €20M หรือ 4% ของ revenue ทั่วโลก Compliance = minimum security standard → ถ้าทำไม่ได้แม้แต่ minimum แสดงว่า security มีปัญหาจริงๆ
Major Compliance Frameworks
| Framework |
Scope |
Who Needs It |
| PCI DSS |
Payment card data security (12 requirements) |
Any organization that stores/processes/transmits credit card data |
| ISO 27001 |
Information Security Management System (ISMS) |
Any organization wanting international security certification |
| NIST CSF |
Cybersecurity Framework (Identify, Protect, Detect, Respond, Recover) |
US government agencies, widely adopted by enterprises |
| SOC 2 |
Trust Service Criteria (Security, Availability, Processing Integrity, Confidentiality, Privacy) |
SaaS providers, cloud services, data processors |
| HIPAA |
Health data privacy and security |
Healthcare providers, insurance, business associates handling PHI |
| PDPA (Thailand) |
Personal data protection (Thai law) |
All organizations collecting/processing personal data in Thailand |
PCI DSS Network Requirements
| Requirement |
Network Relevance |
Implementation |
| Req 1: Firewall/Network Security |
Install and maintain network security controls |
Firewall rules, segmentation, DMZ, deny-all default, review rules every 6 months |
| Req 2: Secure Configuration |
No vendor defaults (passwords, settings) |
Hardening standards, change all defaults, disable unnecessary services |
| Req 4: Encrypt Transmission |
Encrypt cardholder data over public networks |
TLS 1.2+ for all transmission, no SSL/early TLS, certificate management |
| Req 6: Secure Systems |
Develop and maintain secure systems |
Patch management (critical patches within 30 days), vulnerability scanning |
| Req 10: Logging & Monitoring |
Log and monitor all access to network resources |
Centralized logging (SIEM), NTP sync, retain logs 1 year (3 months online) |
| Req 11: Regular Testing |
Test security systems regularly |
Quarterly vulnerability scans (ASV), annual penetration test, IDS/IPS |
ISO 27001 Network Controls (Annex A)
| Control |
Description |
Network Implementation |
| A.8.20 Network Security |
Networks managed and controlled to protect information |
Network segmentation, firewall policies, access controls |
| A.8.21 Web Filtering |
Access to external websites managed |
Web proxy, URL filtering, SSL inspection |
| A.8.22 Segregation of Networks |
Groups of services separated in networks |
VLANs, firewalls between zones, micro-segmentation |
| A.8.23 Secure Configuration |
Configurations of hardware/software established and managed |
Configuration standards, automated compliance checking |
| A.8.15 Logging |
Activities monitored and logged |
Syslog, SIEM, flow logging, NTP synchronization |
| A.8.16 Monitoring Activities |
Networks and systems monitored for anomalous behavior |
IDS/IPS, NDR, SIEM correlation, alerting |
Audit Preparation
| Phase |
Action |
Timeline |
| 1. Scope Definition |
Define what’s in scope: network segments, devices, data flows |
3-6 months before audit |
| 2. Gap Assessment |
Compare current state vs requirements → identify gaps |
3-4 months before |
| 3. Remediation |
Fix gaps: update configs, add controls, document policies |
2-3 months before |
| 4. Evidence Collection |
Gather evidence: config exports, scan reports, logs, policies, procedures |
1-2 months before |
| 5. Internal Audit |
Self-audit: verify all controls are working, evidence is complete |
1 month before |
| 6. External Audit |
Auditor reviews evidence, interviews staff, tests controls |
Audit window |
| 7. Remediation |
Fix any findings from audit within agreed timeframe |
30-90 days after audit |
Compliance Automation
| Tool/Approach |
Function |
Examples |
| Config Compliance |
Automatically check device configs against compliance standards |
Cisco DNA Center, Batfish, NAPALM compliance, custom scripts |
| Vulnerability Scanning |
Automated scan for vulnerabilities → report → track remediation |
Nessus, Qualys, Rapid7, OpenVAS |
| SIEM |
Centralized log collection, correlation, alerting, retention |
Splunk, Elastic SIEM, Wazuh, Microsoft Sentinel |
| Network Access Control |
Enforce who/what can connect to network — 802.1X, NAC |
Cisco ISE, Aruba ClearPass, FortiNAC, PacketFence |
| Policy as Code |
Define compliance rules as code → automated checking in CI/CD |
Open Policy Agent (OPA), HashiCorp Sentinel, custom Python |
| GRC Platforms |
Governance, Risk, Compliance management — track controls, evidence, risks |
ServiceNow GRC, Archer, Vanta, Drata |
ทิ้งท้าย: Compliance = Security Baseline, Not Security Maximum
Network Compliance Frameworks: PCI DSS (payments), ISO 27001 (ISMS), NIST CSF (cybersecurity), SOC 2 (services), HIPAA (health), PDPA (Thai data) PCI DSS Network: firewall/segmentation, no defaults, encrypt transmission (TLS 1.2+), logging (SIEM), quarterly scans, annual pentest ISO 27001: network security, segregation, secure config, logging, monitoring — Annex A controls Audit Prep: scope → gap assess → remediate → evidence → internal audit → external audit → fix findings (6-month cycle) Automation: config compliance (Batfish/NAPALM), vuln scanning (Nessus/Qualys), SIEM (Splunk), NAC (ISE), policy as code (OPA) Key: compliance is the minimum security standard — automate compliance checking to reduce burden and ensure continuous compliance
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