21世纪是信息化的世纪,计算机网络技术的发展尤为重要,计算机技术的广泛应用给我们的生活和工作带来极大的便利,丰富了我们的业余娱乐生活,但是随着社会和技术的不断发展,计算机网络安全也是目前被关注的重点问题,计算机网络安全关系到每位用户的信息私密安全,加强对计算机网络安全防护技术的发展十分必要。 The 21st century is the century of informationization. The development of computer network technology is particularly important. The extensive application of computer technology has brought great convenience to our life and work, enriched our leisure life, but with the constant social and technological development Development, computer network security is also the focus of attention, computer network security is related to the privacy of each user’s information, strengthen the development of computer network security technology is necessary.