Wireless 2

Wireless Grid is an emerging communication and resource sharing architecture in recent years. It is getting more and more researches and application in mission, industry, business, science research. Wireless grid technique is developing and improving, especially with the storage capacity rising. Storage resource can be managed by wireless grid and ensure the grid availability and reliability by replica, cache pre-fetch and buffer.Extracting information or discovering knowledge from wireless or mobile grids has become increasingly important issue. Many researches in grid environment only consider data mining time.Other constraints, such as energy consumption and immediate bandwidth that are more important in mobile computing, will physically affect the performance and system availability.If Grid system is integrated with the wireless network devices, Grid applications will soon be popularly and widely deployed in different domains to serve many more people in the world.Wireless Grid-based mobile agent system (WGMAS) which integrates mobile agent techniques and wireless environment with a Grid system, to provide a wireless accessible mobile agent system to users.AnIntruder is a person who attempts to gain unauthorized access to a system, to damage that system, or to disturb data on that system. In summary, this person attempts to violate Security by interfering with system Availability, data Integrity or data Confidentiality.The goal of an Intrusion Detection System (IDS) is to "identify, preferably in real time, unauthorized use, misuse, and abuse of computer systems by both system insiders and external penetrates". An IDS is used as an alternative (or a complement) to building a shield around the network. The shielding approaches deficient in several ways, including failure to prevent attacks from insiders