NETHINT: Monitoring Local Network Interference With Passive Measurements
Michael Welzl, Safiqul Islam, Kristjon Ciko, Petter Barhaugen, Oskar Haukebøe · 2025
The "quality" of a home Internet connection is hard to quantify, as it is a subjective measure encompassing many factors. One of them, the detection of local (as opposed to remote) traffic interference, is not provided by existing tools. We address this with NETHINT, a tool to detect whether users and their applications disturb each other in a home network. NETHINT identifies traffic correlations via passive online latency monitoring. We explain the inner workings of NETHINT, and show how it can be successfully applied for live online root cause analysis of delay in a local network.