A year ago, I was exploring a few Kubernetes CNI plugins when I stumbled upon the Cilium project. Cilium uses eBPF and XDP for network traffic control, security, and visibility. eBPF (Extended Berkeley Packet Filter) allows you to attach your code on the fly to almost any function within the Linux kernel. XDP (Xpress DataPath), on the other hand, enables manipulation of network traffic even before it reaches the network stack of the Linux kernel. Essentially, eBPF and XDP let you dynamically ...
