Cover image for DSL for dummies
DSL for dummies
Angell, David.
Personal Author:
Publication Information:
Foster City, CA : IDG Books Worldwide, [1999]

Physical Description:
xxiii, 321 pages : illustrations ; 24 cm.
General Note:
Includes index.
Format :


Call Number
Material Type
Home Location
Item Holds
TK5103.75 .A55 1999 Adult Non-Fiction Central Closed Stacks

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An introduction to Digital Subscription Lines (DSL), a fast way to establish Internet access. It examines how to choose a DSL provider, set up the equipment needed to use the service, and make a connection without having to log on and off the provider. It discusses DSL support provided by Microsoft Windows 95/98/NT, connecting DSL through a network, and various applications of this technology, such as video conferencing methods.

Author Notes

David Angell is a principle in (, a technical communications firm in Boston specializing in telecommunications, TCP/IP, and Microsoft Windows. He has made a career of demystifying computers, telecommunications, and the Internet. David is the author of 20 books, including ISDN For Dummies, 2nd Edition and Microsoft Internet Information Server 4 For Dummies.

Table of Contents

Forewordp. xxiv
Introductionp. 1
About This Bookp. 1
Foolish Assumptionsp. 2
Conventions Used in This Bookp. 3
How This Book Is Organizedp. 3
Part I Getting Comfortable with DSLp. 3
Part II Shopping for DSLp. 4
Part III Connecting Your PC or LAN to DSLp. 4
Part IV The Part of Tensp. 4
Part V Appendixesp. 4
What You're Not to Readp. 5
Icons in This Bookp. 5
Where to Go from Herep. 5
Part I Getting Comfortable with DSLp. 7
Chapter 1 DSL: More than a Pipe Dreamp. 9
A Bad Case of the Bandwidth Bluesp. 9
Modems, POTS, and the PSTNp. 10
ISDN: Too little, too late, too expensive?p. 11
T1 and frame relay: High speed, high costp. 11
DSL: The Bandwidth Sweet Spotp. 12
DSL is riding the winds of changep. 13
The Telecommunications Act and DSLp. 14
Meet the DSL familyp. 14
The great DSL bypassp. 16
Availability and pricep. 16
A DSL Connection Changes Everythingp. 19
DSL Reality Checkp. 21
Subject to change without noticep. 21
Keeping your distancep. 21
Please stand by, we're experiencing technical problemsp. 22
Fragile competitionp. 22
Waiting for interoperabilityp. 23
Bandwidth shell gamep. 23
What's on Cable?p. 24
Should you check out cable modem service?p. 25
Cable competition can't hurtp. 25
Chapter 2 The Telecom Side of DSLp. 27
Welcome to the Telecommunications Junglep. 27
Gatekeepers of the last milep. 28
Changing the rulesp. 28
Through the regulatory mazep. 29
Inside the Telecommunications Networkp. 30
All loops lead to the central officep. 30
Keeping tethered through local loopsp. 30
Extending the reach of COs through DLCsp. 31
The big PSTN switchp. 32
Inside the DSL Networkp. 33
DSLAM: Center of the DSL universep. 33
Is your loop qualified?p. 34
Going the distancep. 35
End of the Linep. 35
Customer Premises Equipment (CPE)p. 36
The great dividep. 36
Getting wired for DSLp. 37
Know your connectorsp. 38
CLECs and DSL Servicep. 38
How a data CLEC operatesp. 39
CLECs, ISPs, and DSL servicep. 39
ILECs and DSL Servicep. 40
Chapter 3 The Zen of DSLp. 41
DSL Data Communications 101p. 41
The nature of digital communicationsp. 41
Frequencies and bandwidthp. 42
Changing channelsp. 43
Signaling and modulationp. 43
Asymmetric or symmetricp. 44
Data swimming upstream or downstreamp. 44
Throughput (bandwidth in the real world)p. 45
The Many Flavors of DSLp. 45
ADSLp. 46
UADSL (G.Lite)p. 46
SDSLp. 48
RADSLp. 49
IDSLp. 49
HDSL and HDSL-2p. 49
VDSLp. 50
DSL Standards and Forumsp. 50
Know your DSL standards organizationsp. 51
The current state of DSL standardsp. 51
Chapter 4 All Nodes Lead to TCP/IPp. 53
TCP/IP and Your DSL Connectionp. 53
The five layers of TCP/IPp. 54
The life of packetsp. 55
Gateway to the TCP/IP universep. 56
Any port in a stormp. 57
Creating Identity with IP Addressesp. 57
IP addresses have class and no classp. 58
Subnet subdivisionp. 60
Using private IP addressesp. 60
It's all in the translationp. 61
Using registered IP addressesp. 62
Using static and dynamic IP addressingp. 62
What's In a Name Anyway?p. 63
Host names, domains, and subdomainsp. 64
Top-level domain namesp. 64
A new crop of top-level domainsp. 65
The domain name gamep. 66
IP Configuration Recipesp. 68
Using a block of registered IP addressesp. 68
Using NAT and private IP addressesp. 69
PPP on DSLp. 71
PPP over Ethernetp. 72
PPP over ATM over DSLp. 72
Chapter 5 DSL CPE Field Guidep. 75
Types of DSL CPEp. 75
DSL CPE Interoperabilityp. 76
Chipsets, Firmware, and DSL CPEp. 77
Single-User DSL CPE Optionsp. 77
USB: Say goodbye to UARTp. 78
In the PCI modem cardsp. 79
Single-computer bridgesp. 79
Multiuser DSL CPE Optionsp. 81
Bridge over DSL watersp. 81
Going the DSL router routep. 82
Sharing a DSL Connectionp. 83
Chapter 6 To Serve and Protect: Internet Securityp. 85
Internet Security 101p. 85
Understanding Firewalls and Proxy Serversp. 87
Packet filter firewallsp. 87
Proxy serversp. 88
Security Solutions for the Rest of Usp. 90
DSL routers as firewallsp. 92
Software proxy serversp. 93
Proxy server in a boxp. 94
Security as an appliancep. 95
Isolating your protocolsp. 97
Part II Shopping for DSLp. 99
Chapter 7 Getting Your DSL Connectionp. 101
Creating Your DSL Game Planp. 101
The big three pieces of DSL servicep. 101
DSL game plan checklistp. 102
Checking DSL Availabilityp. 104
Tracking down DSL servicep. 105
Have your phone number and address readyp. 108
Behind the scenes in DSL local loopsp. 109
Figuring Out Your Need for Speedp. 109
Checking Out Your DSL Service Optionsp. 112
Finding a good Web sitep. 112
Getting the quotep. 113
The devil is in the detailsp. 113
Crunching the Numbersp. 114
Start-up chargesp. 116
Monthly recurring chargesp. 117
Chapter 8 TCP/IP Applications for Your DSL Servicep. 119
Stop, Take a Deep Breath, and Thinkp. 119
Harnessing your DSL connectionp. 120
Monitoring Your DSL Performancep. 121
Using ping and tracert commandsp. 122
Visual Routep. 122
Net.Medicp. 123
Running a Web Serverp. 124
Going with a Web hosting servicep. 124
Web server bandwidth requirementsp. 125
Web server softwarep. 127
Running an E-Mail Serverp. 129
Microsoft Exchangep. 129
Deerfield's MDaemonp. 129
Eudora WorldMail Serverp. 130
Show and Tell through IP Video Conferencingp. 130
DVC system primerp. 131
Microsoft NetMeetingp. 132
CU-SeeMep. 133
WebCams and video clipsp. 133
Net Phones, Faxes, and Pagersp. 134
IP phone homep. 135
Net faxingp. 136
Buzz me (IP paging)p. 136
I Want My VPNp. 138
Practicing Safe Downloadsp. 139
Working by Remote Controlp. 140
Chapter 9 Checking Out DSL Providersp. 143
CLECs and DSL Servicep. 143
The CLEC and ISP relationshipp. 144
Checking out CLEC DSLp. 145
CLECs and CPE optionsp. 145
NorthPoint Communicationsp. 146
DSL service optionsp. 146
DSL service availabilityp. 146
CPE optionsp. 147
ISP partnersp. 149
Covad Communicationsp. 151
DSL service optionsp. 151
DSL service availabilityp. 152
CPE optionsp. 152
ISP partnersp. 153
Rhythms NetConnectionsp. 157
CPE optionsp. 157
DSL service availabilityp. 157
ISP partnersp. 157
ISPs Acting as DSL CLECsp. 158
ILECs and DSL Servicep. 159
Pacific Bellp. 159
DSL service optionsp. 160
DSL service availabilityp. 161
ISP partnersp. 161
US WESTp. 162
DSL service availabilityp. 163
ISP partnersp. 164
Bell Atlanticp. 164
DSL service optionsp. 164
DSL service availabilityp. 165
BellSouthp. 166
Southwestern Bellp. 167
Ameritechp. 168
GTEp. 169
DSL service optionsp. 169
DSL service availabilityp. 170
ISP partnersp. 171
Chapter 10 Facing the ISP Interfacep. 173
The DSL and ISP Connectionp. 173
Walking through a DSL service installationp. 174
Navigating your CPE optionsp. 176
Bridged DSL servicep. 176
Routed DSL servicep. 177
Putting Your IP Package Togetherp. 178
Getting IP addressesp. 178
Domain Name Servicep. 179
Getting your domain namep. 179
Transferring your domain name from another ISPp. 180
Internet E-mail Servicesp. 181
Internet e-mail primerp. 181
Hosting your Internet mailboxes with the ISPp. 182
Running your own e-mail serverp. 182
Network News Servicep. 183
Web Hostingp. 183
Part III Connecting Your PC or LAN to DSLp. 185
Chapter 11 Building Your LAN Foundationp. 187
The LAN Planp. 187
The LAN-to-DSL connectionp. 189
Go fast with Fast Ethernetp. 190
A star is bornp. 191
A Matter of Networking Stylep. 193
Nice and easy with peer-to-peer networkingp. 193
Power networking through client/server networkingp. 193
NIC Your Computerp. 194
Taking the PCI magic busp. 196
Installing a NIC in a PCp. 196
Installing a NIC driver in Windows 95 and 98p. 197
Installing a NIC driver in Windows NTp. 198
Connecting a notebook using a PC Card NICp. 200
Adding multiple NICs on a PCp. 201
The Media Is the Messagep. 201
Twisted pair isn't a deviant couplep. 202
Getting wiredp. 202
One-on-one with crossover linkp. 203
Journey to the Center of the LANp. 203
What's all the hubbub?p. 204
Making the switchp. 206
Chapter 12 Windows 95/98 Meets DSLp. 211
Windows 95/98 and DSL Connectionsp. 211
Setting Up TCP/IP in Windows 95/98p. 213
Configuring Windows 95/98 TCP/IP Clientsp. 215
Configuring Windows 95/98 clients for DHCPp. 215
Configuring Windows 95/98 clients for static IP addressesp. 217
Managing network card propertiesp. 219
Managing your protocol bindingsp. 220
Working the DUN Wayp. 221
Installing Dial-Up Networkingp. 222
Setting up a new connection profilep. 223
Configuring your DUN connection profilep. 223
Making the DUN connectionp. 225
Bypassing the Connect To dialog boxp. 226
Handy Windows 95/98 TCP/IP Utilitiesp. 227
What's your IP status?p. 227
Reach out and telnet someonep. 229
Ping, ping, pingp. 230
Tracing your routesp. 232
Chapter 13 Windows NT Meets DSLp. 233
Windows NT and DSL Connectionsp. 233
Setting Up TCP/IP in Windows NTp. 234
Configuring NICs for TCP/IP in Windows NTp. 237
Configuring Windows NT for dynamic IP addressingp. 238
Configuring Windows NT for static IP addressingp. 238
Beyond basic TCP/IP configurationp. 241
Working the DUN Wayp. 243
Installing and configuring RAS for DUNp. 243
Creating a Phonebook entryp. 244
Configuring your Phonebook entry for TCP/IPp. 245
Keeping up appearancesp. 247
Making the connectionp. 249
Handy Tools of the IP Tradep. 251
What's your IP status?p. 251
Reach out and telnet someonep. 251
Ping, ping, pingp. 253
Tracing your routesp. 255
Part IV The Part of Tensp. 257
Chapter 14 Dave's Top Ten Reasons for Getting DSL Servicep. 259
Cut Your Web Surfing Timesp. 259
Move Big Files Quicklyp. 260
Run Your Own Web Serverp. 260
Add Show and Tell to Internet Communicationsp. 261
Telework in the VPN Fast Lanep. 261
Use Push and Pull Applicationsp. 262
Level the Data Communications Playing Fieldp. 262
Run Your Own E-mail Serverp. 262
Share Your Internet Connectionp. 263
Tap into Flat Rate Servicep. 263
Chapter 15 Ten DSL Service Shopping Tipsp. 265
Use the Caveat Emptor Defensep. 265
Shop around to Compare DSL Offeringsp. 266
Know What You Need Before Orderingp. 267
Don't Be Afraid to Ask Questionsp. 267
Know Your CPE Options and Pricesp. 267
Ask about Promotional Dealsp. 268
Ask for Price Protection Guaranteesp. 268
Get a Written Quotep. 268
Read the Fine Printp. 269
Ask about Backbones and QoSp. 269
Chapter 16 Ten Questions to Ask about DSL Servicep. 271
Is DSL Service Available in Your Area?p. 271
What's Your Need for Speed?p. 272
Which Type of CPE Do You Want to Use?p. 273
What's Your IP Configuration?p. 274
What's Your TCP/IP Application Strategy?p. 275
What Will DSL Service Cost?p. 276
How Helpful Is the ISP?p. 277
What Are the ISP's Terms and Restrictions?p. 278
Do You Plan to Connect Multiple Computers?p. 279
What Other Services Do You Want from an ISP?p. 279
Part V Appendixesp. 281
Appendix A DSL Products, Services, and Resourcesp. 283
DSL CPE Vendorsp. 283
DSL Proxy Server and Security Productsp. 284
TCP/IP Utilities and Applicationsp. 285
TCP/IP utilitiesp. 285
Video conferencingp. 285
Web serversp. 286
E-mail serversp. 287
Net phones, net faxing, and IP pagingp. 287
Remote control programsp. 288
Virtual private networkingp. 288
ILEC and CLEC Web Sitesp. 289
Other DSL Resourcesp. 290
Appendix B Glossaryp. 291
Indexp. 307