随着计算机技术的发展,计算机网络的应用领域和应用人群急剧增加,网络安全问题也日益严重。因此,论述计算机网络安全的含义,现代计算机网络受到的攻击手段及保障计算机网络安全的技术,包括防火墙、数据加密技术、入侵检测技术等,以提高计算机网络安全性。 With the development of computer technology, the application fields of computer networks and application of the population have increased dramatically, and the problem of network security has also become increasingly serious. Therefore, the connotation of computer network security, the means of attack on modern computer network and the technology of protecting computer network security, including firewall, data encryption technology and intrusion detection technology are discussed in order to improve the security of computer network.