Tagged: eBPF

23 July 2026 Linux Container Networking Networking Cilium eBPF Kubernetes

Container Networking Deep Dive Part 7: eBPF-Native Networking and the End of kube-proxy

kube-proxy's default iptables mode chain-walks a rule per backend, per packet. Cilium's kube-proxy replacement skips that entirely, at the socket layer, before a packet is even built. What kube-proxy actually does, and what changes when eBPF replaces it.
30 June 2026 Linux Kubernetes eBPF Security Networking

Cilium: Kubernetes Networking and Security Built on eBPF

Cilium replaces iptables-based kube-proxy and overlay CNIs with eBPF programs on the kernel datapath. Connects back to namespaces, veth pairs, nftables, and eBPF/XDP, then covers identity-based network policy and Hubble observability.