Cilium powers kernel-level Kubernetes networking with eBPF

// 1h agoINFRASTRUCTURE

Cilium powers kernel-level Kubernetes networking with eBPF

Cilium is an open-source, CNCF-graduated project that provides, secures, and observes network connectivity between container workloads using Extended Berkeley Packet Filter (eBPF) technology. By running dynamically compiled bytecode directly within the Linux kernel, Cilium replaces legacy iptables routing to achieve near wire-speed packet processing, multi-cluster connectivity, and fine-grained L3–L7 security policies without requiring container sidecars or application-level code modifications.

// ANALYSIS

eBPF has decisively won the Kubernetes networking ecosystem, establishing Cilium as the modern standard for cloud-native infrastructure.

–Executing logic directly within the Linux kernel avoids traditional network stack overhead and eliminates iptables scaling bottlenecks.
–Deep, transparent observability via Hubble and runtime security via Tetragon deliver comprehensive cluster visibility with minimal CPU penalty.
–Integration as the default or recommended CNI across major managed cloud platforms like GKE, EKS, and AKS reinforces its enterprise dominance.

// TAGS

ebpfkubernetesnetworkingsecurityobservabilitycnigolangcloud-native

DISCOVERED

1h ago

2026-09-17

PUBLISHED

1h ago

2026-09-17

RELEVANCE

9/ 10

// KEEP READING

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