H B Acharya

I'm a researcher, engineer and educator in Networks and Cybersecurity. I have several years' experience creating and leading research projects, coordinating small teams, presenting reports, and teaching.

Other interests: Distributed Systems, Protocols, Network Science, and Algorithms (string matching, sequence alignment, etc.)

Research Interests:

A few current projects include:

1. Data-plane network security. - The P4 language allows SDN switches to parse packets and extract header fields – but not payload fields. It's "not for DPI". Or is it? We built DeeP4R, a system that actually *does* perform DPI on P4. We currently have a limited next-gen firewall, and aim to explore intrusion detection, DNS server, and other use cases.

2. Internet Interference. - Do network outages and censors affect users *in other countries*? Can we route around them using overlays or CDN? Or, in the worst case (no disruption-free paths), can we "punch through" the blockage? Our Decoy Routing system, SiegeBreaker, is one way to do this.

3. Meshed Tree Protocol. - In Data Centers etc., we no longer compute loop-free paths or multi-paths at L2; it is all done in L3. *Can* a fast, resilient network backplane at L2 outperform L3 solutions?