Building A Wireless Office: 1st Edition (Paperback) book cover

Building A Wireless Office

1st Edition

By Gilbert Held

Auerbach Publications

296 pages | 149 B/W Illus.

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Paperback: 9780849312717
pub: 2002-08-29
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Description

Sales of IEEE 802.11x compliant wireless LANs are literally exploding. Unfortunately the manuals that accompany the equipment do not address topics such as site selection, equipment interoperability with products from different vendors, how to acquire and configure different firewalls, network address translation, and router software that becomes necessary when connecting to the internet. Building a Wireless Office covers these topics and more.

Written for a wide audience of readers who are either considering the use of wireless LANs or need to learn how to use them more efficiently, the text teaches how wireless LANs operate, the difference between currently available and emerging products, and why new wireless LANs that operate at higher data rates may not be suitable nor cost effective for all organizations. Focusing on key topics associated with the construction of a wireless office this how-to guide explains technical issues in non-technical terms.

The text discusses several areas asociated with wireless security that will minimize the possibility of your communication being read by unathorized parties. Building a Wireless Office provides you with information you can use to efficiently and economically construct a wireless office ranging in scope from two computers sharing information over the air, to the interconnection of hundreds to thousands of wireless products.

Table of Contents

Introduction to Wireless LANs

Wireless Networking Devices

Wireless LAN Network Adapters

Access Point

Types of Networking

Wireless Bridge

Wireless Routers

Wireless Access Server

Rationale for Wireless LANs

Economics

Adds, Moves, and Changes

Roaming

Disadvantages to Wireless LANs

Learning New Technology

Proliferation of Standards

Security

Applications

Home Use

Hospital

College Campus

Office Support

Portals

Book Preview

Technology and Terminology

IEEE Standards

Basic Wireless LAN Operations

The TCP/IP Protocol Suite

Security

Working with Vendor Products

The Future

Technology and Terminology

Basic Communications Concepts

Frequency

Wavelength

Bandwidth

Modulation Methods

Amplitude Modulation

Frequency Modulation

Phase Modulation

Nyquist Relationship

Quadrature Amplitude Modulation

Differential Modulation

Signaling Methods

Infrared

Types of Infrared Transmission

Limitations

Frequency Hopping Spread Spectrum

Rationale for Spread Spectrum

Operation

Direct Sequence Spread Spectrum

Operation

Orthogonal Frequency Division Multiplexing

Evolution

Operation

The Frequency Spectrum and Wireless LANs

ISM Bands

Where Wireless LANs Reside

Measurements

Power Ratios

Bel

Decibel

Decibel Milliwatt

Signal-to-Noise Ratio

Channel Capacity

Antenna Considerations

Radiation Pattern

Beamwidth

Antenna Gain

Wireless LAN Terminology

Architecture

The Station

Network Topologies

Ad Hoc Networking

Infrastructure Networking

Access Point Operation

The Distribution System

The Extended Service Set

Media Access Control

CSMA/CA

The Hidden Node Problem

IEEE Standards

Basic Architecture

Layer Separation

Physical Layer Operation

Infrared

Frequency Hopping Spread Spectrum

Modulation

Frequency Channels

Direct Sequence Spread Spectrum

Barker Code

Modulation

Comparison to FHSS

Complementary Code Keying

Code Sets

Orthogonal Frequency Division Multiplexing

Frequency Allocation

Scope of Coverage

Physical Layer Operations

FHSS

DSSS

OFDM

MAC Layer Operations

Layer 2: Framing

Protocol Version Field

Type and Subtype Fields

ToDS/FromDS Fields

More Frag Field

Retry Field

Power Management Field

More Data Field

WEP Field

Order Field

Duration/ID Field

Address Fields

Sequence Control Field

Frame Body Field

CRC Field

Management Frames

The Beacon Frame

The Probe Response Frame

Control Frames

Hidden Nodes

Use of RTS and CTS Frames

RTS and CTS Frame Formats

ACK Frame

Media Access

Time Gaps

DCF Operation

PCF Operation

Basic Wireless LAN Operations

Ad Hoc Networking

Adapter Card Setup

Configuring a Wireless Network Adapter

Ad Hoc Settings

TxRate

WEP

PS Mode

Channel

Network Software

Enabling File and Print Sharing

Assigning Identifiers

Sharing Network Resources

Setting TCP/IP Parameters

The Proof Is in the Pudding

Internet Connection Sharing

Installation

Configuration

Infrastructure Operations

Wireless Router Configuration

Access the Router

Configuring a PC IP Address

Configuring the DNS

Gateway Configuration

Using Your Browser

Accessing the Configuration Setup Utility

Using the Setup Wizard

System Name Assignment

Wireless LAN Setup Parameters

Defining the Wired Connection

Defining Address Assignments

Internet Access via the Router

Site Selection

TCP/IP Protocol Suite

The Internet Protocol

Datagrams and Segments

Datagrams and Datagram Transmission

Routing

The IP Header

Vers Field

Hlen Field

Service Type Field

Total Length Field

Identification and Fragment Offset Fields

Flags Field

Time to Live Field

Protocol Field

Header Checksum Field

Source and Destination Address Fields

IP Addressing

The IP Addressing Scheme

Address Classes

Rationale

Class Addressing Overview

Class A Address

Class B Addresses

Class C Addresses

Class D Addresses

Class E Addresses

Dotted Decimal Notation

Basic Workstation Configuration

Reserved Addresses

Subnetting

Overview

Subnetting Example

Host Restrictions

The Zero Subnet

Internal Versus External Subnet Viewing

Using the Subnet Mask

Multiple Interface Addresses

Address Resolution

Ethernet and Token Ring Frame Formats

LAN Delivery

Address Resolution Operation

ARP Packet Fields

Locating the Required Address

Gratuitous ARP

Proxy ARP

RARP

ICMP

Overview

The ICMP Type Field

The ICMP Code Field

Evolution

The Transport Layer

TCP Overview

The TCP Header

Source and Destination Port Fields

Multiplexing and Demultiplexing

Port Numbers

Well-Known Ports

Registered Ports

Dynamic or Private Ports

Sequence and Acknowledgment Number Fields

Hlen Field

Code Bits Field

Window Field

Checksum Field

Urgent Pointer Field

Options Field

Padding Field

Connection Establishment

Connection Function Calls

Port Hiding

Passive OPEN

Active OPEN

The Three-Way Handshake

Overview

Operation

The TCP Window

Avoiding Congestion

TCP Slow Start

The Slow-Start Threshold

TCP Retransmissions

Session Termination

UDP

The UDP Header

Source and Destination Port Fields

Length Field

Checksum Field

Operation

Applications

The DNS

The Domain Name Structure

The Domain Name Tree

The Name Resolution Process

Data Flow

Time Consideration

DNS Records

Checking Records

Diagnostic Tools

Ping

Operation

Implementation

Using Windows NT Ping

Traceroute

Operation

Using Windows Tracert

Tracing a Route

Applications

NSLOOKUP

Operation

Viewing the SOA Record

Protecting Server Information

Finger

Format

Security Considerations

Applications

Security

Security Risks

Architecture

The Role of the SSID

Insertion Attacks

Monitoring Attacks

Masquerade

Broadcast Monitoring

Denial of Service Attacks

Other Attack Methods

Exploiting File Sharing

SNMP Community Names

Accessing a Management Console

Encryption Attacks

Theft of Hardware

Understanding WEP

Overview

Setup Example

Cipher Operation

RC4

Algorithm Operation

WEP Key Definition

Authentication Methods

Open Authentication

Shared Key

MAC Address 201

Vulnerabilities

The IV

Attack Methods

Using the IV

Enhancing Wireless Security

MAC Address-Based Authentication

Use Dynamic WEP Keys

LEAP Authentication

Using Secure Sockets

The VPN Solution

Bar Code Authentication

The IEEE 802.1x Standard

Overview

Cisco Implementation

Orinoco Implementation

Router Access Control

Shielding

Working with Vendor Products

Agere System's Orinoco Wireless Kit

Client Setup

Installation Software

Client Manager

Adjusting the Configuration

Network Name

Security Setting

Power Management

TCP/IP Behavior

Setting Up the Residential Gateway

The Welcome Screen

RG Identification

Specifying the Internet Connection

Settings Summary

Network Topology

Advanced Features

Card Testing

Link Test

Cisco Aironet

Aironet Client Utility

Configuring the Client

System Parameters Tab

RF Network Tab

Home Networking Tab

Network Security Tab

Advanced Settings

Interesting Product Features

Netgear MR324 Wireless Router

System Settings

System Name

Password

DDNS

LAN Setup

RIP Support

Wireless LAN Setup

Port Forwarding

Static Route

Content Filter

Other Features

SMC Networks Barricade Wireless Router

Router Access

Access Control

Virtual Server

DMZ Host

Remote Administration Host

Administrative Timeout

Discard Ping

Nonstandard FTP Port

Interoperability

WEP Key Considerations

The Future

Evolving Wireless LAN Products

Print Servers

Rationale

Types of Servers

Authentication Server

RADIUS

Token Card

Evolving Wireless LAN Standards

The 802.1x Standard

The 802.11g Standard

Subject Categories

BISAC Subject Codes/Headings:
BUS083000
BUSINESS & ECONOMICS / Information Management
COM032000
COMPUTERS / Information Technology
COM043000
COMPUTERS / Networking / General
TEC007000
TECHNOLOGY & ENGINEERING / Electrical