NetworkSecurityPolicy.PDF

/mas Modern Applied Science Vol. 4, No. 7; July 2010 Network Security Policy Lihua Han School of Information, Linyi Normal University Linyi, Shandong, China E-mail: hlh1227@126.com Abstract The development of the Internet makes the rapid economy development of the whole society. Many enterprises form their own networks and connect to the Internet, in order to fully realize the sharing and use of data resources. With the development of the network, network security has become a growing concern in all sectors. This paper discusses the status of network security and several major network security technologies, and proposes several measures to realize the network security. Keywords: Network security, Firewall, Encryption, Intrusion detection 1. Network and its status 1.1 The concept of networks and network security The computer security is defined as the establishment of a data processing system and the technical and management security to protect the computer hardware, software, data is not damaged, changed and disclosure due to accidental or malicious f reasons. by International Standards Organization (ISO). The definition of computer security includes physical security and logical security. The logical security can be understood as information security, referring to the protection of the integrity, availability and reliability of the information. The network security is the meaning of information security, extended, or network security is the integrity of net