7.1 What is network security? 7.2 Principles of cryptography 7.3 Authentication 7.4 Integrity 7.5 Key Distribution and certification 7.6 Access control: firewalls 7.7 Attacks and counter measures 7.8 Security in many layers

《计算机网络与通讯》课程教学资源（PPT课件讲稿，英文版）Chapter 3 Transport Layer

Link Layer: setting the context actual PDu flow Router r1 applicatio pp lication transport trar sport network net vork data link

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

Assignment: read Part I: Introduction chapter 1 in text ur goa Overview: get contex↑ what's the Internet overview.\feel\of what's a protocol?

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

第12讲网页设计与编程(三) 一、CG概念和PHP程序设计基础

一、因特网与TCP—因特网的协议 二、DNS 三、TCP、UDP

一、普通网站的基本构成 二、Web中的静态和动态网页 三、Web服务器环境的安装 四、Web网页的发布和访问

Dezina Brittania Theme nice blue/white theme which was originally based on Somara \s Red-White-Blue