Micro-Segmentation
Flat networks let attackers move laterally after a single compromise. Micro-segmentation eliminates lateral movement by isolating every workload and requiring explicit authorization for every communication path. Anubiz Engineering implements micro-segmentation at the network, platform, and application layers.
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Segmentation Strategy
We design segmentation boundaries based on your application architecture and data sensitivity. Tiers are segmented by function: frontend, API, workers, databases. Environments are isolated: production, staging, development share nothing. Tenants are separated in multi-tenant systems. Each segment boundary is a zero trust enforcement point with authentication, authorization, and encryption required to cross.
Network Layer Segmentation
Cloud VPCs are segmented with subnets, security groups, and NACLs. Kubernetes namespaces get default-deny NetworkPolicies with explicit ingress and egress rules. Cilium or Calico enforces L3/L4 policies with identity-aware filtering that follows pod IP changes. We generate network policy from observed traffic patterns first, then tighten rules iteratively to avoid breaking legitimate communication.
Application Layer Controls
Network segmentation is necessary but insufficient — it does not distinguish between authorized and unauthorized API calls on an allowed path. We add application-layer controls: service mesh authorization policies that verify caller identity and restrict HTTP methods/paths, API gateway rate limiting and authentication, and database-level access control with per-service credentials that restrict table and operation access.
Segmentation Monitoring
Every denied connection attempt is logged and analyzed. We set up flow logs, NetworkPolicy audit logs, and service mesh access logs to provide complete visibility into communication patterns. Unexpected connection attempts trigger security alerts. A network flow dashboard shows all inter-service communication, highlighting flows that bypass segmentation controls or use unexpected paths. Regular audits verify that segmentation policies match the current architecture.
Why Anubiz Engineering
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