(Common sense of network security In recent years, with the development of the Internet and the continuous increase of networked devices, the loopholes in them have brought the hackers to stand by. To be attacked 2,244 times, mostly from automated attack scripts, recruiting countless computers to find the right timing and failure, controlling as many machines as possible to suggest attacks of larger designs. Security experts warn that the current A vulnerability exists in a critical Internet security protocol used by major network products that could potentially expose systems to denial-of-service attacks and other types of attacks.
Network Security and Defense.ppt)