BPF

BPF, or Berkeley Packet Filter, is a technology used in computer networks to efficiently capture and analyze data packets traveling across a network. Think of it as a highly selective filter that allows you to monitor specific types of network traffic without slowing down the system. It provides a flexible way for software tools to access and inspect network data in real-time, aiding in tasks like troubleshooting, security monitoring, and performance analysis. BPF operates at the kernel level, offering fast and precise filtering capabilities, making it a foundational component in modern network diagnostics.