In this talk we are going to present the second part of the 
Network Security series of talks. We will use the following 
paper to lead the discussion "A Taxonomy of DDoS Attacks and 
Defense Mechanisms" by Jelena Mikovic and Peter Reiher.

In the first part of the talk, Vijay will finish his presentation
about models of worm spread and containment. Then, we will discuss
another type of treats to network, distributed denial of service attacks.

Georgios is going to present the typical and the forseeable DDoS attacks.
Since there is a strong reseamblance of DDoS attacks and Worms, he will
focus more on the dynamics aspects of DDoS, what they do after they have
compromised lots of zoombies, rather than on how to recruit this machines.

From that point, Nahur is going to present a taxonomy of the defense 
mechanisms, and give a brief introduction on some of the hypes of
this topic: IDS, snort, anomaly detection, source-end defense, ingress 
filtering, puzzles, traceback, etc.