Local Area Network Management, Design and Security: A Practical Approach / Edition 1

by Arne Mikalsen, Per Borgesen

Overview

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.

Product Details

ISBN-13:	9780471497691
Publisher:	Wiley
Publication date:	06/10/2002
Pages:	464
Product dimensions:	7.46(w) x 9.33(h) x 1.00(d)

About the Author

Arne B. Mikalsen and Per Borgesen work as associate professors at the Faculty of Informatics and E-learning, Sør-Trøndelag University College, where they teach courses in LAN management, network theories and data communication.

Table of 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