Feature detection of known attack or invasion deterministic manner described, the formation of the corresponding event model. When the audit events and mode of invasion known to match, that alarm. Principle is similar with the expert system. The detection method with the computer virus detection method similar. Based on the characterization of the current package is widely used for pattern matching. The method is higher forecast accuracy rate of detection, but no empirical knowledge of the invasion and the attack could do nothing. Statistical anomaly detection model used in the statistical model commonly measured parameters include: the number of audit events, the interval of time, resources consumption and so on. Commonly used statistical models intrusion detection 5: 1, the operation model, the model assumes that exception can be measured compared with the number of fixed targets are fixed targets can experience or the statistical average over time are, for example, multiple failures in a short time login password is most likely try to attack;
Suns total revenues in the half from the server, its clients include AT T and China Mobile. Sun spokesman Sean - Daina Si and IBM spokesman Ed - Barbini neither comment. IBM CEO Sam Palmisano said last month that the economic downturn will actively attack the occasion of the acquisition. According to market analyst firm Gartner said that as of the fourth quarter, IBM won 33% of the worldwide server market share, the acquisition of Sun, its market share will increase to 43%, far higher than HPs 30% share. The acquisition deal also can enhance IBMs software revenue. Suns Solaris operating system running on the computer and the main data center. Microsoft announced a design for a new small business server software, but with Microsoft Small Business Server is a different product, should not be confused. The latter is with Windows Server and Exchange and other product mix, target number of employees in less than 50 enterprises, and the new Windows Server 2008 Foundation product, it is only an operating system for use below 15 the number of single processor servers.