Along with the development of the Internet, computer
network has penetrated into all aspects and sectors of the
society and the department. The computer network has
already become an important infrastructure both in the
society and schools. Social relying more on computer
network makes the reliability of the network system itself
more important. At present, as the network applies more
and more widely, the development scale of the computer
network expands and the management of network system
is becoming more and more complex, the network brings
people convenience and network fault and unsafe factors
also brings a lot of trouble at the same time. Therefore,
it's necessary to monitor the management of network
running, detect malicious attacks and unsafe factors on the
network in time, and take actions to keep the network
stable and reliable.