Hop-Count Filtering, proposed by Jin et al. A research project at the University of Michigan, aimed at defending against DDoS by observing the TTL value (time to live, the number of hops or routers a packet will travel before getting discarded to avoid network loops—the value gets decremented at each router the packet traverses) in [...]
Whether our DDoS defense strategy is preventive, reactive, or a combination of both, there are some basic goals we want it to achieve. Effectiveness A good DDoS defense should actually defend. It should provide either effective prevention that really makes attacks impossible or effective reaction ensuring that the DoS effect goes away. In the case [...]
This articles is the next discussion of early articles of DDos prevention. In some cases the attack is un-preventable, then the only thing we got is react on it. While there are many DDoS attacks on an Internetwide basis, many nodes will never experience a DDoS attack, or will be attacked only rarely. If attacks [...]
With the improvement of the DDos attack which impacting on the increase of computer security threats, there still something we could do to protect the target. The way we prevent the attacks from happening are with early detection detect and then react effectively when they do occur. Preventive Measures A simple and effective way to [...]
The terms ingress and egress mean, respectively, the acts of entering and exiting. In an interconnected network of networks, such as the Internet, what leaves (egresses) one network will enter (ingress) another. It is extremely important to clearly define the location where the filtering is done with respect to the network whose traffic is being [...]