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Full Description
How to use LANs to help your company grow A vital component of today's business, Local Area Networks (LANs) allow organizations to link their computers together for maximum work sharing, collaboration among geographically disparate teams, and other essential business functions. This book helps system administrators and IT professionals set up LANs and Intranets in a way that will contribute to their company's growth and success. Beginning with the theoretical foundation for LAN operation and design, it covers the applicable data communications principles, then goes on to explore both LAN hardware and infrastructure design, network operating systems, LAN management and security. The book also gives a practical introduction to the world's most popular network operating systems—Windows 2000, Novell NetWare, and Linux. Finally, the book takes an in-depth look at business and management issues, with special emphasis given to the impact of Intranets on business goals.
Contents
Preface xiii
Objectives xiii
Structure of the book xiv
Target readers xiv
Long distance learning xv
Thanks xv
Chapter 1 - introduction 1
Terminology 2
History 3
Mainframe/minicomputers and networks 3
Microcomputers and local area networks 4
Local area networks, Ethernet and internet 4
Classification of local area networks 5
Local area network (LAN) 5
Metropolitan area network (MAN) 5
Wide are network (WAN) 5
WANs and the Internet 6
Intranets 6
Why local area networks? 7
Resource sharing 7
Communication and cooperation 7
Security 8
Costs 8
The life cycle of the local area network 8
Analysis 9
Design 10
Implementation 10
Integration and system testing 11
Operation and maintenance 11
Conclusion 11
Part 1
Chapter 2 - Data communication in local area networks 13
Models for communication 14
A layered model 17
Communication tasks 18
OSI 22
TCP/IP 28
Conclusion 34
Media and Physical layers 34
Media 34
Topology 37
Point-to-point or star topology 37
Bus or tree topology 38
Ring topology 39
Hubs and switches 39
The telephone network and modems 40
DTE - DCE 41
Types of connection 41
Capacities 42
Fields of application 42
How a modem works 42
Serial interface and standards 44
Flow control 45
Error correction 46
Compression 47
Command set 47
Null modem 48
ISDN 48
ADSL 50
UMTS 51
Access methods 51
Contest (CSMA/CD) 51
Token passing 53
Local area network standards 53
IEEE 802.2 LLC - Logical Ling Control 55
IEEE 802.x MAC - Medium Access Control 55
FDDI - Fiber Distributed Data Interface 61
ATM 63
IP networks 65
The protocols 68
IP addresses 69
IP datagram format 72
Assigning IP numbers in local area networks 75
IP routing 76
Transport layer in the TCP/IP suite 82
TCP - Transmission Control Protocol 86
TCP protocol details 90
UDP - User datagram Protocol 95
Application in TCP/IP networks 97
SMTP Simple mail Transfer Protocol 97
HTTP - Hypertext Transfer protocol 99
DNS - Domain Name System 100
Encryption and security 103
Traditional encryption algorithms 104
Encryption with public and private keys 106
PCP encryption 107
Part 2
Chapter 3 - Hardware in a local area network 111
Servers 112
File applications 113
SCSI 115
Hard disks 121
Buses 124
Memory (RAM) 128
Motherboards 132
Processor 134
Chipset 138
Case 139
Hardware for backup copying 141
Magnetic tape 142
Other media 143
Network interface cards 143
Introduction 143
Arhilecture 144
Examples of network card setup and installation 148
Workstations 150
Homogenus networks 150
Diskless workstations 150
Other factors 15I
Cables 151
Twisted-pair cables 152
Coaxial cables 155
Wireless networks 158
Conclusion 158
Exercises 159
Chapter 4 - Designing local area networks 161
Introduction 162
Topology 162
Bus 155
Ring 165
Star 167
Segments [Ethernet] 168
Traditional interconnection components 169
Repeaters 169
The 5-4-3 rule for connecting segments 170
Bridges 170
Routers 173
Switch technology 175
Mode of Operations 177
Type of switch 178
Port switching and segment switching 180
Combined speed 181
Structured cabling 182
Cabling and patch panel 183
Hubs 185
Wireless networks 187
Speed Spectrum transfer 188
Infrared transfer 188
VLAN 189
Routing between VLANs 193
Paperwork and documentation 194
Two strategies 195
Negotiation of contract 196
Support and maintenance 197
Level of support agreements 198
Installation 199
Documentation 199
Planning of location 199
Building regulations 202
Summary 202
Exercises 203
Part 3
Chapter 5 - Local area network operating system 205
Introduction 205
Peer-to-peer network 207
Functions and responsibility 208
I/O optimisation 208
Fault tolerance 212
Multiple processing and time sharing 220
Print spooler 222
Logical and physical printing 222
"The running" of network printing 223
Current network operating systems 223
Banyan VINES 224
LANtastic 224
OS/2 Warp Server 225
Summary 225
Exercises 227
Chapter 6 - Management and security 229
Introduction 229
Deciding security levels 230
Printing environment 232
Printing opportunities 232
Printer driver 239
A society of users 239
Groups 241
Physical security 243
Logical security 245
Backup 248
The need for backup 248
Wheel are the consequences? 249
Static and dynamic data 250
Full/incremental/differential backup 250
Backup routine 251
Recouvery 255
Firewalls 256
Disaster planning 257
Summary 257
Exercises 259
Chapter 7 - Novell netware 261
Versions 261
NetWare 252
NetWare 4 262
IntranetWare 264
NetWare 5 265
GroupWise 268
ManageWise 269
NDS - Novell Directory Services 269
What is NDS? 270
Object orientation 271
Object types 273
Leaf objects 274
Novell file system 275
Volumes and folders 275
System fault tolerance 276
SFT Level I 276
SFT Level II 277
SKV level III 278
The order of login script 280
Novell NetWare security 281
Login security 281
Trustees 284
Novell NDS security 293
Printing Environment in Novell NetWare 298
Queue-based printing environment 298
NDPS - Novell Distributed Print Services 302
Managing/maintenance of printing (NDPS) 304
Summary 306
Exercises 307
Chapter 8 - Windows 2000 309
Introduction 309
History/versions 310
Windows 310
Windows 95/98 311
Windows Me (Millennium edition) 312
Windows NT 313
Windows 2000 314
Windows 2000 Professional 315
Hardware requirements 316
Administrator user on workstation 317
Password administration 317
Windows 2000 server 317
Hardware requirements 318
Installation 318
Connecting workstations in. W2K network 320
Workgroups 321
Active directory 322
Important terms 322
Microsoft Management Console MMC 328
Adctive Directory design 327
Object management in Active Directory 330
User administration 331
Groups 327
File security 342
Sharing 342
Folder/file rights 346
Controlling access to AD objects 351
Policies 353
Summary 357
Chapter 9 - linux 361
Introduction 361
History 362
GNU 363
Distributors 364
LINUX structure 365
Installation [RedHat LINUX) on PC 366
Preparations 367
Installation alternatives 368
The file system and. Partitioning 369
LILO Bootmanager 371
Startup 371
Simple UNIX 371
Users and groups 371
Files and rights 373
Useful commands 375
Process handling 376
Shell programming 376
Printing environment in Linux 377
System administration 379
Graphical user interface 380
X-windows 380
Window manager 381
FVWM2 381
WindowMaker 381
Enlightment 381
Libraries 382
GNOME 382
KDE 382
Applications under Linux 383
Xterm 383
Text editors 383
Emacs 384
Pico 384
Word processing 384
Staroffice 384
WordPerfect 385
Other applications 386
Development tools 386
LINUX in networks 386
TCP/IP 386
Platform for services 386
Summary 388
Exercises 389
Part 4
Chapter 10 - Management philosophy and standards for network administration 391
Introduction 391
The fire fighting management method 391
The fire fighting approach 393
Preventive management 396
The good circle 397
Capacity planning 398
System tuning 399
Examples of tools of preventive management 401
Preventive or fire fighting? 436
Standards for network administration 407
MIB 408
SNMP 410
RMON 411
Summary 413
Exercises 414
Chapter 11 - intranet 415
Introduction 415
Intranet services 417
Conveying messages and e-mail 417
Conference system 417
Videoconferences 420
Sharing information 422
Spreading information 422
Implementing an intranet 426
Planning, planning and planning 426
Intranet tools 427
Maintenance and management 429
Summary 437
Exercises 438
Index 439
