Abstract: Computer Application in the increasingly extensive and in-depth at the same time， computer and network security problems have become increasingly complex and Network vulnerability and complexity of the increased threats and the possibility of With the global security incidents has risen over the years to ensure the safety of network information system has attracted the world's attention， and information security in all countries suffered from the unprecedented This referral network security， the paper from the firewall， attacks and emergency response， intrusion detection， hacker， and so few simple 网络、Network 防火墙（firewall）、黑客 HackerInternet
The discussion about Network Security Technology [Abstract] With the increasingly extensive and in-depth of Computer Applicationat， computer and network security problems have become increasingly complex and prominent atthe same Network's vulnerability and complexity increased the possibility of threats and even With the global security incidents has risen over the years ，to ensure the safety of network information system has attracted the world's attention， and information security in all countries suffered from the unprecedented To do with network security， the paper-- from the firewall， attacks and emergency response， intrusion detection， hacker， and so on-- carried on a simple study[Key Word] Network， Firewall， Hacker， Internet
