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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.
| Introduction | p. xvii |
| Introduction to Wireless LANs | p. 1 |
| Wireless Networking Devices | p. 1 |
| Wireless LAN Network Adapters | p. 2 |
| Access Point | p. 3 |
| Types of Networking | p. 4 |
| Wireless Bridge | p. 5 |
| Wireless Routers | p. 6 |
| Wireless Access Server | p. 7 |
| Rationale for Wireless LANs | p. 8 |
| Economics | p. 8 |
| Adds, Moves, and Changes | p. 9 |
| Roaming | p. 10 |
| Disadvantages to Wireless LANs | p. 11 |
| Learning New Technology | p. 11 |
| Proliferation of Standards | p. 11 |
| Security | p. 12 |
| Applications | p. 13 |
| Home Use | p. 13 |
| Hospital | p. 15 |
| College Campus | p. 15 |
| Office Support | p. 16 |
| Portals | p. 17 |
| Book Preview | p. 18 |
| Technology and Terminology | p. 18 |
| IEEE Standards | p. 18 |
| Basic Wireless LAN Operations | p. 18 |
| The TCP/IP Protocol Suite | p. 19 |
| Security | p. 19 |
| Working with Vendor Products | p. 19 |
| The Future | p. 19 |
| Technology and Terminology | p. 21 |
| Basic Communications Concepts | p. 21 |
| Frequency | p. 21 |
| Wavelength | p. 23 |
| Bandwidth | p. 25 |
| Modulation Methods | p. 26 |
| Amplitude Modulation | p. 26 |
| Frequency Modulation | p. 27 |
| Phase Modulation | p. 28 |
| The Nyquist Relationship | p. 28 |
| Quadrature Amplitude Modulation | p. 29 |
| Differential Modulation | p. 31 |
| Signaling Methods | p. 32 |
| Infrared | p. 33 |
| Types of Infrared Transmission | p. 33 |
| Limitations | p. 33 |
| Frequency Hopping Spread Spectrum | p. 34 |
| Rationale for Spread Spectrum | p. 34 |
| Operation | p. 34 |
| Direct Sequence Spread Spectrum | p. 35 |
| Operation | p. 35 |
| Orthogonal Frequency Division Multiplexing | p. 36 |
| Evolution | p. 36 |
| Operation | p. 37 |
| The Frequency Spectrum and Wireless LANs | p. 37 |
| ISM Bands | p. 37 |
| Where Wireless LANs Reside | p. 38 |
| Measurements | p. 39 |
| Power Ratios | p. 39 |
| Bel | p. 39 |
| Decibel | p. 40 |
| Decibel-Milliwatt | p. 41 |
| Signal-to-Noise Ratio | p. 42 |
| Channel Capacity | p. 43 |
| Antenna Considerations | p. 45 |
| Radiation Pattern | p. 45 |
| Beamwidth | p. 45 |
| Antenna Gain | p. 46 |
| Wireless LAN Terminology | p. 47 |
| Architecture | p. 47 |
| The Station | p. 47 |
| Network Topologies | p. 48 |
| Ad Hoc Networking | p. 48 |
| Infrastructure Networking | p. 48 |
| Access Point Operation | p. 49 |
| The Distribution System | p. 50 |
| The Extended Service Set | p. 50 |
| Media Access Control | p. 50 |
| CSMA/CA | p. 50 |
| The Hidden Node Problem | p. 51 |
| IEEE Standards | p. 53 |
| Basic Architecture | p. 53 |
| Layer Separation | p. 53 |
| Physical Layer Operation | p. 54 |
| Infrared | p. 54 |
| Frequency Hopping Spread Spectrum | p. 55 |
| Modulation | p. 55 |
| Frequency Channels | p. 55 |
| Direct Sequence Spread Spectrum | p. 56 |
| Barker Code | p. 56 |
| Modulation | p. 56 |
| Comparison to FHSS | p. 56 |
| Complementary Code Keying | p. 57 |
| Code Sets | p. 57 |
| Orthogonal Frequency Division Multiplexing | p. 58 |
| Frequency Allocation | p. 58 |
| Scope of Coverage | p. 58 |
| Physical Layer Operations | p. 59 |
| FHSS | p. 59 |
| DSSS | p. 60 |
| OFDM | p. 60 |
| MAC Layer Operations | p. 61 |
| Layer 2: Framing | p. 61 |
| Protocol Version Field | p. 62 |
| Type and Subtype Fields | p. 62 |
| ToDS/FromDS Fields | p. 62 |
| More Frag Field | p. 62 |
| Retry Field | p. 62 |
| Power Management Field | p. 63 |
| More Data Field | p. 64 |
| WEP Field | p. 64 |
| Order Field | p. 64 |
| Duration/ID Field | p. 65 |
| Address Fields | p. 65 |
| Sequence Control Field | p. 66 |
| Frame Body Field | p. 66 |
| CRC Field | p. 66 |
| Management Frames | p. 67 |
| The Beacon Frame | p. 67 |
| The Probe Response Frame | p. 67 |
| Control Frames | p. 68 |
| Hidden Nodes | p. 68 |
| Use of RTS and CTS Frames | p. 69 |
| RTS and CTS Frame Formats | p. 69 |
| ACK Frame | p. 70 |
| Media Access | p. 70 |
| Time Gaps | p. 70 |
| DCF Operation | p. 71 |
| PCF Operation | p. 72 |
| Basic Wireless LAN Operations | p. 75 |
| Ad Hoc Networking | p. 75 |
| Adapter Card Setup | p. 76 |
| Configuring a Wireless Network Adapter | p. 77 |
| Ad Hoc Settings | p. 77 |
| TxRate | p. 78 |
| WEP | p. 78 |
| PS Mode | p. 78 |
| Channel | p. 78 |
| Network Software | p. 80 |
| Enabling File and Print Sharing | p. 80 |
| Assigning Identifiers | p. 81 |
| Sharing Network Resources | p. 81 |
| Setting TCP/IP Parameters | p. 85 |
| The Proof Is in the Pudding | p. 89 |
| Internet Connection Sharing | p. 90 |
| Installation | p. 91 |
| Configuration | p. 92 |
| Infrastructure Operations | p. 94 |
| Wireless Router Configuration | p. 94 |
| Access the Router | p. 95 |
| Configuring a PC IP Address | p. 95 |
| Configuring the DNS | p. 95 |
| Gateway Configuration | p. 95 |
| Using Your Browser | p. 97 |
| Accessing the Configuration Setup Utility | p. 97 |
| Using the Setup Wizard | p. 99 |
| System Name Assignment | p. 99 |
| Wireless LAN Setup Parameters | p. 99 |
| Defining the Wired Connection | p. 103 |
| Defining Address Assignments | p. 103 |
| Internet Access via the Router | p. 106 |
| Site Selection | p. 106 |
| TCP/IP Protocol Suite | p. 109 |
| The Internet Protocol | p. 109 |
| Datagrams and Segments | p. 110 |
| Datagrams and Datagram Transmission | p. 110 |
| Routing | p. 110 |
| The IP Header | p. 111 |
| Vers Field | p. 111 |
| Hlen Field | p. 111 |
| Service Type Field | p. 112 |
| Total Length Field | p. 113 |
| Identification and Fragment Offset Fields | p. 113 |
| Flags Field | p. 115 |
| Time to Live Field | p. 115 |
| Protocol Field | p. 115 |
| Header Checksum Field | p. 116 |
| Source and Destination Address Fields | p. 116 |
| IP Addressing | p. 116 |
| The IP Addressing Scheme | p. 120 |
| Address Classes | p. 121 |
| Rationale | p. 122 |
| Class Addressing Overview | p. 122 |
| Class A Addresses | p. 123 |
| Class B Addresses | p. 125 |
| Class C Addresses | p. 125 |
| Class D Addresses | p. 126 |
| Class E Addresses | p. 127 |
| Dotted Decimal Notation | p. 127 |
| Basic Workstation Configuration | p. 128 |
| Reserved Addresses | p. 131 |
| Subnetting | p. 133 |
| Overview | p. 133 |
| Subnetting Example | p. 133 |
| Host Restrictions | p. 135 |
| The Zero Subnet | p. 136 |
| Internal Versus External Subnet Viewing | p. 136 |
| Using the Subnet Mask | p. 137 |
| Multiple Interface Addresses | p. 139 |
| Address Resolution | p. 140 |
| Ethernet and Token Ring Frame Formats | p. 141 |
| LAN Delivery | p. 141 |
| Address Resolution Operation | p. 142 |
| ARP Packet Fields | p. 142 |
| Locating the Required Address | p. 143 |
| Gratuitous ARP | p. 143 |
| Proxy ARP | p. 143 |
| RARP | p. 144 |
| ICMP | p. 144 |
| Overview | p. 144 |
| The ICMP Type Field | p. 145 |
| The ICMP Code Field | p. 145 |
| Evolution | p. 145 |
| The Transport Layer | p. 146 |
| TCP Overview | p. 148 |
| The TCP Header | p. 148 |
| Source and Destination Port Fields | p. 148 |
| Multiplexing and Demultiplexing | p. 149 |
| Port Numbers | p. 149 |
| Well-Known Ports | p. 150 |
| Registered Ports | p. 150 |
| Dynamic or Private Ports | p. 150 |
| Sequence and Acknowledgment Number Fields | p. 151 |
| Hlen Field | p. 152 |
| Code Bits Field | p. 153 |
| Window Field | p. 153 |
| Checksum Field | p. 154 |
| Urgent Pointer Field | p. 154 |
| Options Field | p. 154 |
| Padding Field | p. 154 |
| Connection Establishment | p. 155 |
| Connection Function Calls | p. 155 |
| Port Hiding | p. 155 |
| Passive OPEN | p. 156 |
| Active OPEN | p. 156 |
| The Three-Way Handshake | p. 156 |
| Overview | p. 157 |
| Operation | p. 157 |
| The TCP Window | p. 158 |
| Avoiding Congestion | p. 159 |
| TCP Slow Start | p. 160 |
| The Slow-Start Threshold | p. 160 |
| TCP Retransmissions | p. 161 |
| Session Termination | p. 161 |
| UDP | p. 162 |
| The UDP Header | p. 162 |
| Source Port and Destination Port Fields | p. 163 |
| Message Length Field | p. 163 |
| Checksum Field | p. 163 |
| Operation | p. 163 |
| Applications | p. 164 |
| The DNS | p. 164 |
| The Domain Name Structure | p. 165 |
| The Domain Name Tree | p. 165 |
| The Name Resolution Process | p. 166 |
| Data Flow | p. 166 |
| Time Consideration | p. 168 |
| DNS Records | p. 168 |
| Checking Records | p. 169 |
| Diagnostic Tools | p. 170 |
| Ping | p. 170 |
| Operation | p. 170 |
| Implementation | p. 170 |
| Using Windows NT Ping | p. 171 |
| Traceroute | p. 173 |
| Operation | p. 174 |
| Using Windows Tracert | p. 174 |
| Tracing a Route | p. 175 |
| Applications | p. 176 |
| NSLOOKUP | p. 177 |
| Operation | p. 177 |
| Viewing the SOA Record | p. 179 |
| Protecting Server Information | p. 179 |
| Finger | p. 179 |
| Format | p. 180 |
| Security Considerations | p. 181 |
| Applications | p. 181 |
| Security | p. 183 |
| Security Risks | p. 183 |
| Architecture | p. 184 |
| The Role of the SSID | p. 184 |
| Insertion Attacks | p. 186 |
| Monitoring Attacks | p. 186 |
| Masquerade | p. 188 |
| Broadcast Monitoring | p. 191 |
| Denial-of-Service Attacks | p. 192 |
| Other Attack Methods | p. 193 |
| Exploiting File Sharing | p. 193 |
| SNMP Community Names | p. 193 |
| Accessing the Management Console | p. 194 |
| Encryption Attacks | p. 194 |
| Theft of Hardware | p. 194 |
| Understanding WEP | p. 196 |
| Overview | p. 196 |
| Setup Example | p. 197 |
| Cipher Operation | p. 197 |
| RC4 | p. 198 |
| Algorithm Operation | p. 198 |
| WEP Key Definition | p. 199 |
| Authentication Methods | p. 200 |
| Open Authentication | p. 200 |
| Shared Key | p. 200 |
| MAC Address | p. 201 |
| Vulnerabilities | p. 201 |
| The IV | p. 202 |
| Attack Methods | p. 202 |
| Using the IV | p. 203 |
| Enhancing Wireless Security | p. 204 |
| MAC Address-Based Authentication | p. 204 |
| Use Dynamic WEP Keys | p. 204 |
| LEAP Authentication | p. 205 |
| Using Secure Sockets | p. 206 |
| The VPN Solution | p. 206 |
| Bar Code Authentication | p. 206 |
| The IEEE 802.1x Standard | p. 207 |
| Overview | p. 207 |
| Cisco Implementation | p. 208 |
| Orinoco Implementation | p. 209 |
| Router Access Control | p. 209 |
| Shielding | p. 210 |
| Working with Vendor Products | p. 213 |
| Agere Systems Orinoco Wireless Kit | p. 213 |
| Client Setup | p. 213 |
| Installation Software | p. 214 |
| Client Manager | p. 214 |
| Adjusting the Configuration | p. 217 |
| Network Name | p. 218 |
| Security Setting | p. 219 |
| Power Management | p. 220 |
| TCP/IP Behavior | p. 221 |
| Setting Up the Residential Gateway | p. 222 |
| The Welcome Screen | p. 222 |
| RG Identification | p. 223 |
| Specifying the Internet Connection | p. 224 |
| Settings Summary | p. 225 |
| Network Topology | p. 226 |
| Advanced Features | p. 227 |
| Card Testing | p. 228 |
| Link Test | p. 228 |
| Cisco Aironet | p. 231 |
| Aironet Client Utility | p. 231 |
| Configuring the Client | p. 231 |
| System Parameters Tab | p. 231 |
| RF Network Tab | p. 233 |
| Home Networking Tab | p. 234 |
| Network Security Tab | p. 235 |
| Advanced Settings | p. 236 |
| Interesting Product Features | p. 237 |
| Netgear MR314 Wireless Router | p. 238 |
| System Settings | p. 238 |
| System Name | p. 238 |
| Password | p. 238 |
| DDNS | p. 239 |
| LAN Setup | p. 239 |
| RIP Support | p. 243 |
| Wireless LAN Setup | p. 243 |
| Port Forwarding | p. 245 |
| Static Route | p. 245 |
| Content Filter | p. 247 |
| Other Features | p. 247 |
| SMC Networks Barricade Wireless Router | p. 247 |
| Router Access | p. 249 |
| Access Control | p. 249 |
| Virtual Server | p. 251 |
| DMZ Host | p. 251 |
| Remote Administration Host | p. 254 |
| Administrative Timeout | p. 254 |
| Discard Ping | p. 254 |
| Nonstandard FTP Port | p. 254 |
| Interoperability | p. 256 |
| WEP Key Considerations | p. 256 |
| The Future | p. 257 |
| Evolving Wireless LAN Products | p. 257 |
| Print Servers | p. 257 |
| Rationale | p. 258 |
| Types of Servers | p. 258 |
| Authentication Server | p. 258 |
| RADIUS | p. 258 |
| Token Card | p. 259 |
| Evolving Wireless LAN Standards | p. 259 |
| The 802.1x Standard | p. 260 |
| The 802.11g Standard | p. 260 |
| Index | p. 263 |
| Table of Contents provided by Syndetics. All Rights Reserved. |
ISBN: 9780849312717
ISBN-10: 084931271X
Audience:
Professional
Format:
Paperback
Language:
English
Number Of Pages: 296
Published: 29th August 2002
Dimensions (cm): 25.4 x 17.8
x 1.6
Weight (kg): 0.526
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