Cybersecurity Architecture
Secure Network Architecture Design: Patterns & Principles
Secure network architecture design applies defense-in-depth principles to network topology: layered perimeter controls, internal segmentation, zero trust access, encrypted communications, strategic monitoring placement, and redundancy. Modern designs combine traditional zone-based approaches with identity-aware, software-defined controls.
Andreas Johansson · Chief Executive Officer
Senior IT management leader with 25 years of experience in Cloud, Security, and Datacenter infrastructure.
Design Principles
- Defense-in-depth — multiple layers, no single point of failure
- Least privilege — minimum necessary connectivity
- Fail secure — default deny, explicit allow
- Visibility — monitor at every layer
- Resilience — redundancy for critical controls
Architecture Patterns
Zone-Based Design
- DMZ for public-facing services
- Application zone for internal services
- Data zone for databases and storage
- Management zone for administration
- Controlled access between zones
Zero Trust Overlay
- Verify every connection regardless of network location
- Identity-aware access policies
- Continuous authentication and authorization
- Encrypted communications everywhere
Monitoring Placement
- Network taps and flow data at zone boundaries
- Full packet capture for critical segments
- DNS monitoring for C2 detection
- East-west traffic visibility (not just perimeter)
Modern Considerations
- Cloud connectivity (VPN, direct connect, SD-WAN)
- Remote access architecture
- IoT and OT network isolation
- Container networking and service mesh security
How SeqOps fits
SeqOps scans the configuration of your cloud accounts and Windows and Linux servers continuously and automatically, and ranks every misconfiguration and vulnerability from Critical to Informational in one view, so you can see where your environment drifts from the design you intended.