All news with #active measurement tag

Working with Passive Data at Internet Scale: Challenges

🔍 During a 2022 internship at Cloudflare, Ram Sundara Raman examined whether connection tampering by network middleboxes can be detected using only passive production data. He sampled one in 10,000 TCP connections and logged the first ten inbound packets, then developed 19 tampering signatures while confronting scale, noisy telemetry, and limited ground truth. The work exposed practical limits of passive observation and the care required to interpret packet-level signals, and its outputs are published on Cloudflare Radar.