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Cilium is a free network access control tool. Green Hills Platform for Secure Networking is a commercial network access control tool by Green Hills Software. Compare features, ratings, integrations, and community reviews side by side to find the best network access control fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Platform teams running Kubernetes on-premises or in hybrid clouds will get the most from Cilium because its eBPF kernel-level enforcement eliminates the latency and blind spots of traditional overlay networking. With 23,959 GitHub stars and active deployments at scale across financial services and public sector organizations, Cilium's approach to policy enforcement at the dataplane level is proven; it also handles observability without requiring sidecar injection, which keeps resource overhead predictable. Not the right fit for teams needing a managed SaaS experience or those prioritizing CSPM and infrastructure compliance scanning over network microsegmentation.
Green Hills Platform for Secure Networking
Enterprise and mid-market teams building safety-critical or defense-grade embedded systems need Green Hills Platform for Secure Networking because its MILS separation kernel actually isolates application faults at the hardware level, not just software policy. The platform runs multiple independent TCP/IP stacks in separate security partitions with zero-copy APIs that preserve real-time performance, and it holds IPv6 READY Program certification across dual-stack implementations. Skip this if you're looking for a general-purpose network access control layer for IT infrastructure; Green Hills is purpose-built for embedded systems where a networking failure can kill a person or compromise classified assets.
Cilium is a networking, observability, and security solution with an eBPF-based dataplane.
Secure embedded networking platform combining RTOS, TCP/IP stack, and virtualization.
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Common questions about comparing Cilium vs Green Hills Platform for Secure Networking for your network access control needs.
Cilium: Cilium is a networking, observability, and security solution with an eBPF-based dataplane..
Green Hills Platform for Secure Networking: Secure embedded networking platform combining RTOS, TCP/IP stack, and virtualization. built by Green Hills Software. headquartered in United States. Core capabilities include Hardware memory protection for application isolation via secure partitions, MILS (Multiple Independent Levels of Security) separation kernel architecture, Information flow control between partitions, stack, router, and applications..
Both serve the Network Access Control market but differ in approach, feature depth, and target audience.
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