The Study And Implementation Of A Protection System For An Intranet

First, this thesis carries out the security risk analysis and requirements analysis on several layers of intranet, such as physics layer, network layer, system layer, application layer and management layer in accordance with the structural characteristics of the governmental intranet. Next, it designs the network security and precaution system aiming at the possible problems in the intranet concerning the five respective. Finally, it lays out security products on every layer, and builds the platform for the systems' secure operation in order to ensure the intranet information security. In addition, it standardizes the intranet users' operation, and develops a complete set of management methods. To start with the government intranet, through the introduction of intranet architecture, this thesis discusses mainly about building up a complete security and protection system for secret-involving computer networks in line with the requirements of intranet security and protection. Being secure, reliable and controllable, the system is designed to eliminate remaining hidden security dangers and loopholes to the maximum, thus ensure the safety, secrecy, integrity, availability and accuracy for the secret-involving data and information in computer information systems.I myself am responsible for the construction of government intranet and takes charge of the whole system' s secure design.