Secure Network Architecture

Secure Network Architecture refers to the design and implementation of network infrastructure with security as a foundational element. It encompasses multiple layers of defense to protect organizational assets from threats. Core components include: 1. Network Segmentation - Dividing networks into distinct zones based on security requirements. This limits lateral movement if breaches occur and contains potential damage. Implementation methods include VLANs, subnets, and physical separation. 2. Defense-in-Depth - Deploying multiple security controls at various network layers. This includes firewalls, IDS/IPS, secure routers, and proxies working in concert. 3. Zero Trust Architecture - Operating under the principle of "never trust, always verify." All users and devices must authenticate and be authorized regardless of location. 4. DMZ (Demilitarized Zone) - A network segment that contains public-facing services while protecting internal networks. 5. Secure Routing and Switching - Implementing secure configurations on network devices with protocols like SSH, HTTPS for management. 6. Access Control - Implementing proper authentication, authorization mechanisms (RADIUS, TACACS+) and network access control. 7. Monitoring and Visibility - Deploying systems for traffic analysis, anomaly detection, and security event correlation. 8. Encryption - Protecting data in transit using VPNs, TLS, and other cryptographic protocols. 9. Redundancy and Resilience - Ensuring availability through redundant connections, failover systems, and disaster recovery planning. 10. Network Security Policies - Documented standards guiding configuration, access, and incident response. Effective secure architecture addresses current threats while remaining adaptable to emerging ones. It balances security needs with operational requirements and performance considerations. Regular assessment through vulnerability scanning and penetration testing verifies the effectiveness of the implementation.

Secure Network Architecture refers to the design and implementation of network infrastructure with security as a foundational element. It encompasses multiple layers of defense to protect organizatio…

Concepts covered: Secure Protocols, Network Segmentation, Intrusion Detection and Prevention Systems (IDPS), Secure Network Design, Access Control Lists (ACLs), Demilitarized Zones (DMZs), Virtual Private Networks (VPNs), Firewalls, Hardening, Subnetting, Network Access Control (NAC), Wireless Security