Northwestern Networks Group Software

Diagnosing Spatio-Temporal Internet Congestion Properties

Linux source code of a congestion measurement tool - Pong. Measurement data of a large-scale Internet experiment on PlanetLab using Pong. Related paper: "Pong: Diagnosing Spatio-Temporal Internet Congestion Properties."

Pollution Resilience for Internet Caches

Simulation code and an implementation of a counter-pollution mechanism available as a ready-to-use upgrade of the Squid caching server. Related paper: "Internet Cache Pollution Attacks and Countermeasures."

Building Network Services Based on CDNs' Redirections

Software and measurements from the paper "Drafting Behind Akamai." Also, a ready-to-use extension to Azureus, one of the most popular BitTorrent's clients. Measurement data sets are available here.

On the Use of Parallel Connections in Web Browsers

Ns-2 code and a FreeBSD implementation. Related paper: "On the Use of Parallel Connections in Web Browsers."

Performance vs. Trust

Ns-2 code and simulation scripts from the paper "A Performance vs. Trust Perspective in the Design of End-Point Congestion Control Protocols." We are grateful to Hung-Yun Hsieh (Georgia Tech) for providing the pilot version of the RCP ns-2 code.

Low-Rate Denial of Service Attacks

Ns-2 code and simulation scripts from the paper "Low-Rate TCP-Targeted Denial of Service Attacks (The Shrew vs. the Mice and Elephants)."

TCP Low Priority (TCP-LP)

Ns-2 code and Linux implementation of TCP-LP. Related paper: "TCP-LP: A Distributed Algorithm for Low Priority Data Transfer."