a discrete event simulator targeted at networking research. Ns provides substantial support for simulation of TCP, routing, and multicast protocols over wired and wireless (local and satellite) networks
component-based, modular and open-architecture simulation environment with strong GUI support and an embeddable simulation kernel. Its primary application area is the simulation of communication networks and because of its generic and flexible architectur
can identify and stop sites trying to phish (steal) your personal information or money. The OpenDNS phishing protection works with all operating systems and browsers, and complements any other security measures already in use, such as a firewall and anti-