网络信息安全存在的问题及处理方法研究
毕业论文关键词： 网络安全；黑客；数字加密；防火墙技术；网络安全问题处理方法
Study on the problems and solutions of network information security
Abstract: This paper conducted a survey on the current network security problems, collect the relevant data about the current network security threats and losses, and the overview of current netw-ork security and network security technology summary, and the Comparison of Application Technology in response to the current security problem of network. Specific measures to deal with network security including network firewall technology, digital encryption technology, prevention of network hacker , strengthen network security management measures, After the final summary I design a set of network security solutions.
I made the experimental about data encryption algorithm , and the comparison and analysis between the DES encryption algorithm and AES encryption algorithm. I got the attack data of Hacker attack and the protection data of firewall. At the same time, through the understa-nding of hacker attack techniques and attack data to sort out the protective measures to prev-ent hacker attacks.
Keywords: Network security；Hackers；Digital encryption ；Firewall technology； Processing method of network security problems
目 录
1 网络安全存在问题概述 1
1.1网络安全的发展与现状 1
1.2网络安全所面临的威胁 3
1.2.1物理威胁 3
1.2.2 系统漏洞威胁 3
1.2.3 身份鉴别威胁 4
1.2.4 病毒和黑客威胁 4
1.3小结 4
2 网络安全 5
2.1 网络安全的定义 5
2.1.1网络安全含义 5
2.1.2 网络安全的属性 5
2.2 网络安全评价标准 5
2.3 网络安全策略 6
2.3.1 安全策略的分类 6
2.4 小结 6
3 网络安全技术 7
3.1 防火墙技术 7
3.1.1 防火墙技术的基本功能 7
3.1.2 拦截攻击的实例 7
3.2 数字加密技术 8
3.2.1 DES加密算法 8
3.2.2 AES加密算法 10
3.3小结 11
4 黑客攻击防范 12
4.1 黑客攻击实例 12
4.1.1 扫描电脑端口信息 12
4.1.2 利用Radmin软件远程控制电脑 12
4.2 使用电脑自带功能防御黑客攻击 15
4.2.1 开启Windows防火墙 15
4.2.2 关闭远程协助功能 16
4.2.3 关闭共享功能 17
4.2.2 设置IP规则 17
4.4 小结 17