On the computer network information security and related technologies

on the Information Society that network applications is becoming increasingly popular, information security is the problem that more and more Internet users worry about. Information security involves not only knowledge of Web application security technology, and more related to data encryption technology. This paper describes the network and information security in real-life performance and the specific reasons, and explained the technical aspects of how to improve network information security, including firewalls, encryption, digital signature and digital certification.