Supporting Web Servers, Networks, and Emerging Technologies

by Dara-Abrams, Benay

• ISBN13: 9780130858993
• ISBN10: 0130858994
• Edition: 1st
• Format: Paperback
• Copyright: 2001-01-01
• Publisher: PRENTICE HALL

Summary

This practical, hands-on learning system walks you step-by-step through every crucial element of successful Web server deployment and management, from planning and decision-making through implementation and optimization. Start with a high-level review of all the fundamentals of networking that impact the Web site manager or developer, from Ethernet to IP addressing -- including key Web protocols such as HTTP; connectivity via ISDN, DSL, and T-carrier systems; encryption; firewalls, and more. Next, review the key issues associated with supporting Web servers, from evaluating and choosing the best technologies to supporting multiple servers; access authorization, privacy, search, indexing, Web robots, and meta-information. Compare your options for Web programming and scripting, including CGI scripting, server-side APIs, dynamic page content, and more. Finally, learn practical strategies for evaluating new technologies and their levels of compliance with widely accepted Web standards. This book is part of Prentice Hall's Advanced Web Site Architecture Series: user-friendly, interactive workbooks with the in-depth knowledge Web professionals need to deliver advanced solutions, backed with a Web site containing sample code and exercises.

Table of Contents

From the Editor	xv
Executive Foreword	xvii
Introduction	xix
About the Authors	xxii
Networking Fundamentals for Webmasters	1	(34)
Networks and Network Characteristics	3	(5)
Identify Different Types of Networks	5	(1)
Identify Network Resource-Sharing Facilities	5	(2)
Self-Review Questions	7	(1)
The Open Systems Interconnection (OSI) Reference Model	8	(6)
Identify Where HTTP Fits in the OSI Model	11	(1)
Give Examples of Protocols on Different Layers	11	(1)
Self-Review Questions	12	(2)
Internetworks and Network Topologies	14	(6)
Identify Various Network Topologies	16	(1)
Understand the Function of Internetworks	17	(2)
Self-Review Questions	19	(1)
Networks Characterized by Spatial Distance	20	(6)
Understand the Benefits of LAN Technology	22	(1)
Relate Spatial Characterization to the Internet, Intranets, and Extranets	22	(2)
Self-Review Questions	24	(2)
Intranets and Extranets	26	(9)
Describe the Major Components of an Intranet and an Extranet	29	(1)
Understand the Differences Between Intranets, Extranets, and the Internet	30	(1)
Self-Review Questions	31	(2)
Test Your Thinking	33	(2)
Architectures, Devices, and Connections	35	(28)
Packet-Switched Networks	36	(5)
Describe How a Packet-Switched Network Works	37	(1)
Compare Packet Switching and Circuit Switching	37	(2)
Self-Review Questions	39	(2)
The Web Client/Server Model	41	(6)
Understand the Difference Between Client/Server, Peer-to-Peer, and Master/Slave Architectures	43	(1)
Appreciate the Advantage of Client/Server Architecture for the Web	43	(2)
Self-Review Questions	45	(2)
Ethernet and FDDI Networks	47	(5)
Understand the Advantages of Using Ethernet Technology	48	(1)
Compare Ethernet and FDDI Technologies	49	(1)
Self-Review Questions	50	(2)
Network Devices	52	(5)
Distinguish Between Routers, Bridges, and Switches	53	(1)
Determine Appropriate Interconnecting Devices for Your Network Architecture	54	(1)
Relate LAN Topologies to Switches	54	(1)
Self-Review Questions	55	(2)
Network Connections	57	(6)
Understand Different Modes of Access to Your Internet Service Provider (ISP)	59	(1)
Determine Why PPP Is Preferred over SLIP	59	(2)
Self-Review Questions	61	(1)
Test Your Thinking	62	(1)
Internet, Network, and Transport Protocols	63	(36)
Internet and Internet Protocol (IP)	65	(5)
Determine the Organizations Responsible for Domain Name Registration	67	(1)
Register a New Domain Name	67	(1)
Self-Review Questions	68	(2)
IP Addresses	70	(7)
Understand the IP Addressing Scheme	73	(1)
Know How to Identify a Domain Name by Its IP Address	73	(2)
Self-Review Questions	75	(2)
Domain Name System (DNS)	77	(4)
Understand How Domains Are Associated with IP Addresses	78	(1)
Know How a Domain Name Is Resolved	78	(1)
Self-Review Questions	79	(2)
Transmission Control Protocol (TCP)	81	(6)
Determine the Socket Number for ``Well Known Services''	84	(1)
Understand the Use of Ports for Services	85	(1)
Self-Review Questions	86	(1)
MAC Addresses	87	(6)
Find MAC Addresses of Computers within Your LAN	90	(1)
Read and Interpret MAC Addresses	90	(1)
Self-Review Questions	91	(2)
User Datagram Protocol (UDP)	93	(6)
Understand the Difference Between TCP and UDP Protocols	94	(1)
List Applications that May Use the UDP Protocol and Understand Why	94	(1)
Self-Review Questions	95	(2)
Test Your Thinking	97	(2)
Applications and Protocols	99	(26)
Hypertext Transfer Protocol (HTTP)	100	(8)
Diagram Web Page Retrieval from the Internet	104	(1)
Diagram Web Page Retrieval from Cache	104	(2)
Self-Review Questions	106	(2)
SMTP, MIME, and FTP	108	(5)
Understand How Mail Protocols Work	109	(1)
Know How to Use File Transfer Protocol	110	(1)
Self-Review Questions	111	(2)
Push and Pull Technologies	113	(4)
Differentiate Between Push and Pull Technologies	114	(1)
Consider When Push Technology Is Appropriate	114	(1)
Self-Review Questions	115	(2)
Streaming Multimedia	117	(8)
Know the Delivery Mechanisms Involved in Streaming Media	119	(1)
Determine When to Provide Streaming Multimedia Facilities	120	(2)
Self-Review Questions	122	(1)
Test Your Thinking	123	(2)
Connectivity	125	(20)
ISDN, DSL, and T-Carrier Technologies	126	(6)
Differentiate Between Various Technologies Offered by Telephone Companies	129	(1)
Determine Availability of Network Services in Your Area	129	(2)
Self-Review Questions	131	(1)
Wireless Networks	132	(6)
Differentiate Between Wirless and Wired Networks	133	(1)
Understand How Wireless Networks Transmit Data	133	(3)
Self-Review Questions	136	(2)
Cable Modems	138	(7)
Compare Various Network Technologies and Services	139	(1)
Differentiate Between Technologies Offered by the Telephone Companies and by the Cable Companies	139	(3)
Self-Review Questions	142	(1)
Test Your Thinking	143	(2)
Network Security	145	(30)
Encryption Systems	146	(9)
Understand the Use of Public Key Cryptography	152	(1)
Consider the Trade-offs in Encrypting Messages	152	(1)
Self-Review Questions	153	(2)
Secure Internet Protocols	155	(7)
Understand the Function of the SSL Protocol	159	(1)
Develop a Privacy Statement	159	(2)
Self-Review Questions	161	(1)
Firewalls and Sniffers	162	(5)
Understand the Functionality of a Firewall	163	(1)
Distinguish Between Use of Sniffers by Network Administrators and Hackers	164	(1)
Self-Review Questions	165	(2)
Proxy Servers, Virtual Private Networks, and Smartcards	167	(8)
Understand the Functionality of a Proxy Server	169	(1)
Assess the Feasibility of a Smartcard Solution	170	(2)
Self-Review Questions	172	(2)
Test Your Thinking	174	(1)
Web Server Support	175	(64)
Web Server Evaluation Issues	177	(10)
Understand the Basic Concepts of Web Hosting	183	(2)
Self-Review Questions	185	(2)
Web Site Service Models	187	(6)
Understand the Basic Web Site Architectures	190	(2)
Self-Review Questions	192	(1)
Supporting Multiple Servers	193	(7)
Choose an Appropriate Web Server Configuration	196	(2)
Self-Review Questions	198	(2)
Server Security Issues	200	(14)
Understand Basic Security Risks	208	(1)
Implement Appropriate Security Measures	209	(3)
Self-Review Questions	212	(2)
Document Root Taxonomies	214	(7)
Design Appropriate Document Root Taxonomies	216	(2)
Self-Review Questions	218	(3)
Access Authorization, Security, and Privacy	221	(7)
Understand Basic Security Configuration	225	(2)
Self-Review Questions	227	(1)
Searching and Indexing Issues	228	(11)
Understand Searching and Indexing Issues	234	(2)
Self-Review Questions	236	(1)
Test Your Thinking	237	(2)
The Web Programming and Scripting Environment	239	(14)
Reasons Why Developers Write Server-Side Script	240	(5)
Discuss the Problems of Writing Client-Side Code	241	(1)
Explain the ``Lowest Common Denominator'' Solution	242	(2)
Self-Review Questions	244	(1)
3-Tiered Web Application Design	245	(8)
Understand and Explain the Presentation Layer	246	(1)
Understand and Explain the Business Logic Layer	247	(1)
Understand and Explain the Persistence Layer	248	(2)
Self-Review Questions	250	(2)
Test Your Thinking	252	(1)
Programming and Scripting in a Client/Server System	253	(24)
Server-side Programming	254	(7)
Identify Key Technologies for Processing Server-Side Code	256	(1)
List Advantages and Disadvantages of Server-Side Code	257	(2)
Self-Review Questions	259	(2)
Client-Side Programming	261	(8)
Write Simple Client-Side JavaScript	263	(1)
Perform Basic Client-Side Form Validation	264	(3)
Self-Review Questions	267	(2)
Combining Client-Side and Server-Side Scripting	269	(8)
Combine Server-Side and Client-Side Logic	270	(1)
Explain How Cookies Are Both Client-and Server-Side Objects	271	(2)
Self-Review Questions	273	(2)
Test Your Thinking	275	(2)
Programming and Scripting Security Issues	277	(20)
Security Tradeoffs	278	(5)
Identify Potential Security Threats	279	(1)
Find a Balance Between Restrictive and Functional	279	(3)
Self-Review Questions	282	(1)
The Importance of Validating User Input	283	(7)
Examine User Input	284	(1)
Prevent Users from Entering HTML	284	(1)
Filter Out Malicious SQL Code	285	(3)
Self-Review Questions	288	(2)
User versus Webmaster Scripting	290	(7)
Identify Web Applications That Are Both Fun and Safe	291	(1)
Identify Web Applications That Are Useful but Dangerous	291	(2)
Self-Review Questions	293	(2)
Test Your Thinking	295	(2)
Scripting Language Evolution	297	(34)
ASP	298	(7)
Output Basic Variables	299	(1)
Code a Basic If-Then Statement	300	(1)
Code a While Loop	301	(3)
Self-Review Questions	304	(1)
Cold Fusion	305	(8)
Output Variables	306	(1)
Code a Basic If-Then Statement	307	(1)
Code a Loop	308	(4)
Self-Review Questions	312	(1)
PHP	313	(10)
Output Basic Variables	314	(2)
Code a Basic If-Then Statement	316	(1)
Code a While Loop	317	(4)
Self-Review Questions	321	(2)
Language Evolution	323	(8)
Describe Conceptual Building Blocks	324	(1)
Identify Emerging and Evolving Technologies	325	(2)
Self-Review Questions	327	(2)
Test Your Thinking	329	(2)
Supporting Supplementary Technologies	331	(44)
Internet and WWW Standardization Activities	333	(13)
Understand the Role of Standards and Standardization	341	(1)
Know Which Organizations Impact the Development of WWW Standards	342	(1)
Understand the Standardization Process Used by These Organizations	342	(1)
Understand How to Use These Organizations as an Information Resource	342	(2)
Self-Review Questions	344	(2)
Strategies for Evaluating New Technologies	346	(9)
Understand the Importance of Standardization When Evaluating New Technology	352	(1)
Understand When New Technologies Should Be Introduced in the Web Site Life Cycle	352	(1)
Self-Review Questions	353	(2)
New Technologies to Watch	355	(20)
Understand the W3C Functional Domains	371	(1)
Understand the Collaboration between the W3C and the IETF	371	(1)
Self-Review Questions	372	(2)
Test Your Thinking	374	(1)
Appendix Answers to Self-Review Questions	375	(7)
Index	382