垃圾邮件防治策略的研究

编号：0701…….

南阳师范学院2012届毕业生

题 目：完 成 人：班 级：学 制：专 业：指导教师：完成日期：

毕业论文

殷德涛 2007-01

计算机科学与技术

王 达 2012-03-30

目 录

摘要 ·····················································································································(1) 0引言 ··················································································································(1) 1网络安全的基本概念 ·················································································(1)

1.1网络安全威胁的类型················································································(1) 1.2网络安全漏洞····························································································(2) 1.3网络攻击····································································································(3) 1.4安全措施的目标························································································(3) 1.5功能设计····································································································(3)

2垃圾邮件的危害 ··························································································(4) 3垃圾邮件的产生 ··························································································(5) 4常用垃圾邮件过滤技术 ············································································(5)

4.1 白名单和黑名单技术 ···············································································(5) 4.1.1白名单和黑名单技术········································································(5) 4.1.2设定过滤规则····················································································(6) 4.1.3基于统计学习的方法········································································(6) 4.2基于内容的垃圾邮件过滤技术································································(6) 4.2.1垃圾邮件内容过滤中应用的文本分类方法····································(7) 4.2.2贝叶斯分类算法················································································(8) 4.2.3决策树································································································(8) 4.2.4 Boosting方法 ·················································································(9) 4.2.5支持向量机························································································(9) 4.3基于网络流量分析的过滤······································································(10)

5防范垃圾邮件的几条原则 ······································································(11)

5.1不要轻易泄露自己的ISP信箱地址······················································(11) 5.2尽量使用免费信箱··················································································(11)

5.3用好邮件软件的管理功能······································································(11) 5.4谨慎使用免费邮箱的“自动回复”功能··············································(12) 5.5准备好专业垃圾邮件清除软件······························································(12)

6垃圾邮件的防治 ······································································· …… 此处隐藏：542字，全部文档内容请下载后查看。喜欢就下载吧 ……