Design And Implementation Of Network Security On Block Trade System

With the development of the Internet, more and more companies are moving their businesses onto the Internet, especially the online trading. Building an open integrated network with TCP/IP protocol as its core is becoming the current of time. Because of the openness of the Internet and the defects of TCP/IP protocol itself in security, the attacking events happen frequently, which bring about inestimable loss in the applied system. The issue of network security is becoming a hot topic in research institutes worldwide since it plays an important role in restricting the development of the Internet.At present, the firewall technology, including packet filtering and proxy server, is one of the effective methods in protecting network security. It can rationally separate the internal network from the public network, such as the Internet.Anyhow, using firewall only is not sufficient in preventing the attack on the network. Hence, Intrusion Detection Technology has been developed. Intrusion Detection System (IDS) is a kind of active protection technology in the protective system of network security. It provides real time protection for computer network and computer system by monitoring to prevent them from internal attack, outside attack and misoperation.Public Key Infrastructure is a new technology developed on the basis of public cryptographic key technology to re-establish the network confidence. It is a universally applicable network security infrastructure, which provides security service based on the concept and techniques of the public key.The article mainly summarizes the basic theory of the network security and emphasizes its application in the Bond Block Trade System, covering the project background, system design, solution of network designing and solution of security for system. In the solution of network designing, this article presents a reliable and secure network based network Switch, network balance, and network redundancy. In the design of network security about business system, three factor about networksecurity are emphasized in details,system-oriented security, network-oriented security and data-oriented security. After discussing the security design about three factor, we analyze and implement the security in the Bond Block Trade System.