A project for solving security problem of event notification service based on WAN

The security requirement of event notification service(ENS) based on WAN is analyzed,and a content-based security framework of ENS is presented.A client privilege definition of access control is analyzed in detail.This technology uses covering relationships in content-based ENS to define access privilege of clients.Experiments show that this technology can prevent efficiently unauthorized user from sending useless information that wastes system resources greatly.