In the paper, the DDoS scenario is modelled as a mathematical programming problem. The defender strategically utilizes the limited resources to maximize the legitimate traffic, and he can adopt packet marking to observe the network status. The information extracts from the marking field can help the defender develop a defense strategy which combines packet filtering and packet blocking. A Lagra...

The problem of routing military convoys between specific origin and destination pairs is known as convoy movement problem (CMP). In this study, we consider an existing mathematical model of CMP and propose a lower bounding procedure based on Lagrangean Relaxation. The robustness of the proposed procedure is evaluated on a variety of test problem instances. Encouraging results are obtained. Jour...