The Implementation Of Firewall Network Security Design Under The LINUX Environment

With the computer and network technology rapid development, internet applicationsare more widely used, however, network security issues are also constantly increasing.Network security issues from a big talk for the country ’s information security, nationalsecurity, economic security and other areas related to people’s livelihood, have a significantimpact, from small talk to a personal computer information protection, privacy, security,there are also a vital role. Network security issue has been the national security communityhas always been more important research areas in the network security research amongdomestic technical experts to conduct in-depth research, firewall technology is the focusareas of research in foreign countries, has been in a more advanced firewall technology status,domestic research has also been important progress, but many aspects still rely on foreigntechnology, therefore, research and development of network security firewall technologyresearch plays an important role.In this paper, from home and abroad LINUX firewall in network security and on thebasis of research results, with independent intellectual property rights and to build highperformance and low cost of LINUX firewall system. Achieve easy to manage, application oftransparency, operating environments and hardware requirements and low, with a strongauthentication and encryption capabilities, interfaces abundance, VPN, and CA’s powerful,low-cost destination, the article first for network security and firewall technology concept,the main features are briefly described, and then describes the network security technologydevelopment process and current firewall technology trends, and then design and implementthe various LINUX-based firewall system’s main function modules, testing and simulationspecific hardware experiments verify the effectiveness of the firewall. Through subsequentdesign, implementation and simulation experiments show that these features are obviousLINUX firewall for our small and medium enterprises, small and medium sized networkssecurity with better performance. In the field of research can fully learn the results of thisstudy.