With the rapid development of network communication
technology, especially the rapid development of Internet
technology, the World Wide Web (WWW) system has been
developed into can provide dynamic interaction network
computing and information services of integrated systems,
is provided by the original can only browse category, the
static services such as information query, up to now the
business process, electronic commerce, information
management, and other complex working procedure's full
support [1]. At the same time, because the Internet is
openness, also give us the computer information system,
especially the network communication has brought the
extremely dangerous potential safety hazard, and at the time
of the network communication security hidden danger will
seriously affects the safety of computer information system
is used. Therefore, all computer network application and
must be considered an important subject in front of us need
to be solved, focusing on how to more effectively protect
the information resources, improve the security of computer
system