linux - Hexmos Journal

linux

Story of a TCP Packet: An Intuitive Entrypoint To Linux Networking

This post traces a TCP packet’s journey through Linux, explaining interfaces, iptables tables and chains, and the networking stack with an analogy, example, and technical details for engineers.

ebpf

eBPF 101: Your First Step into Kernel Programming

eBPF has revolutionized Linux observability and security by allowing sandboxed programs to run in the kernel without changing kernel source code or loading modules