应用层安全技术文档
随着Internet的发展,电子邮件作为一种通信方法逐步遍及。当时电子邮件的用户现已从科/学和教育行业发展到了一般家庭中的用户,电子邮件传递的信息也从一般文本信息发展到包括声响、图像在内的多媒体信息。电子邮件的便宜和操作简洁在给大家带来无穷便当的一起,也诱使部分人将之作为大量发出自己信息的工具,终究致使了互联网S界中垃圾邮件的泛滥。11-使用层安全.ppt
(With the development of the Internet, e-mail has gradually spread as a communication method. At that time, the users of e-mail have developed from the science/academic and educational industries to the users in ordinary households, and the information transmitted by e-mail has also developed from general text information to multimedia information including sound and images. The cheapness and simple operation of e-mail not only bring infinite convenience to everyone, but also induce some people to use it as a tool to send a large number of their own information, which eventually leads to the proliferation of spam in the Internet world.
11-Using Layer Security.ppt)
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