Designed secure hybrid connectivity architecture for a government department migrating workloads to AWS, delivering high-availability network integration aligned to ISM security requirements.
The Challenge
A government department undertaking cloud migration needed secure, reliable connectivity between on-premises data centres and AWS. The architecture needed to support workload migration while maintaining ISM compliance and providing resilience for critical services.
Our Approach
We designed an active-standby hybrid connectivity architecture with traffic engineering for predictable path selection. The solution incorporated stateful inspection at the cloud boundary and network segmentation aligned to security classification requirements. Route filtering and failover mechanisms ensured reliable connectivity with automatic recovery from link failures.
Results
Active-standby hybrid connectivity with automatic failover
ISM-aligned security controls at cloud boundary
Traffic engineering for predictable routing behaviour
Network segmentation between workload classifications
Integration with existing monitoring platforms
Further Reading
VLANs alone do not constitute effective segmentation. Explore zone-based architecture, micro-segmentation technologies, and east-west traffic inspection strategies for critical infrastructure networks.
The gap between intended and actual firewall state is often wider than organisations realise. Rule sprawl, documentation drift, and compliance assumptions create false confidence in network security.
A practical guide to implementing NIST SP 800-37 Rev. 2 Risk Management Framework in Australian organisations. Learn how to integrate the seven RMF steps with local frameworks like the ISM, AESCSF, and Essential Eight.
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