8.1 What is network security? 8.2 Principles of cryptography 8.3 Message integrity and Digital Signature 8.4 End point authentication 8.5 Securing e-mail 8.6 Securing TCP connections: SSL 8.7 Network layer security: IPsec 8.8 Securing wireless LANs 8.9 Operational security: firewalls and IDS

9.1网络接入概述 9.2ISDN接入技术 9.3DSL接入技术 9.4ADSL接入技术 9.5 Cable Modem接入技术 9.6电力线接入方案 9.7 Home PNA接入 9.8DDN数字专线 9.9光纤接入技术 9.10以太网宽带接入技术 9.11宽带固定无线接入技术

5.1虚拟局域网VLAN技术 5.2生成树协议 5.3以太网链路聚合 5.4三层交换技术

6.1命令行接口 6.2配置VLAN实例 6.3配置STP 6.4配置 aggregate port

Chapter Overview: understand principles transport layer services behind transport layer 0multiplexing/demultiplexing services: 0connectionless transport: UDP multiplexing/demultiplex

IP datagram format IP protocol version 32 bits Imber total datagram header lenath lver/head pe length(bytes) (bytes) Hlen service

TCP segment structure 32 bits URG: urgent data (generally not used) source port #f dest port counting by bytes sequence number

Chapter 7: Network security Foundations: what is security? crypfography authentication message integrity key distribution and certification Security in practice: application layer: secure e-mail

3.1 运用实现原则的例子:更新TCAM 3.2 算法VS算法学:安全物证问题 3.3 十五条实现原则 3.4 需要注意的问题

Network layer functions transport packet from sending to receiving hosts network layer protocols in physical every host, router data link physical data link