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Reference Manual for the 54 Mbps Wireless Router WGR614 v6
-1 2 Glossary
202-10099-01, April 2005
can benefit from the free wireless access. The open connections typically come from the access points of
wireless networks located within buildings to serve enterprises. The chalk symbols indicate the type of
access point that is available at that specific spot.
There are three basic designs that are currently used: a pair of back-to-back semicircles, which denotes an
open node; a closed circle, which denotes a closed node; a closed circle with a “W” inside, which denotes a
node equipped with WEP. Warchalkers also draw identifiers above the symbols to indicate the password that
can be used to access the node, which can easily be obtained with sniffer software.
As a recent development, the debate over the legality of warchalking is still going on.
The practice stems from the U.S. Depression-era culture of wandering hobos who would make marks
outside of homes to indicate to other wanderers whether the home was receptive to drifters or was
inhospitable.
War Driving
War driving is the act of locating and possibly exploiting connections to wireless local area networks while
driving around a city or elsewhere. To do war driving, you need a vehicle, a computer (which can be a
laptop), a wireless Ethernet card set to work in promiscuous mode, and some kind of an antenna which can
be mounted on top of or positioned inside the car. Because a wireless LAN may have a range that extends
beyond an office building, an outside user may be able to intrude into the network, obtain a free Internet
connection, and possibly gain access to company records and other resources.
Some people have made a sport out of war driving, in part to demonstrate the ease with which wireless
LANs can be compromised. With an omnidirectional antenna and a geophysical positioning system (GPS),
the war driver can systematically map the locations of 802.11b wireless access points.
WEP (Wired Equivalent Privacy)
Basic wireless security provided by Wi-Fi. In some instances, WEP may be all a home or small-business
user needs to protect wireless data. WEP is available in 40-bit (also called 64-bit), or in 108-bit (also called
128-bit) encryption modes. As 108-bit encryption provides a longer algorithm that takes longer to decode, it
can provide better security than basic 40-bit (64-bit) encryption.
Wi-Fi (Wireless Fidelity)
Another name for IEEE 802.11b. Products certified as Wi-Fi are interoperable with each other even if they
are from different manufacturers. A user with a Wi-Fi product can use any brand of access point with any
other brand of client hardware that is built to the Wi-Fi standard.
Wi-Fi Alliance (formerly WECA – Wireless Ethernet Compatibility Alliance)
The Wi-Fi Alliance is a nonprofit international association formed in 1999 to certify interoperability of
wireless Local Area Network products based on IEEE 802.11 specification. Currently the Wi-Fi Alliance
has 193 member companies from around the world, and 509 products have received Wi-Fi certification since
certification began in March of 2000. The goal of the Wi-Fi Alliance's members is to enhance the user
experience through product interoperability (
www.weca.net).
- Reference Manual for the 1
- 54 Mbps Wireless Router 1
- WGR614 v6 1
- Contents 5
- 202-10099-01, April 2005 10
- Chapter 1 11
- About This Manual 11
- How to Use This Manual 12
- How to Print this Manual 13
- 1-4 About This Manual 14
- Chapter 2 15
- Introduction 15
- 802.11g Wireless Networking 16
- Security 17
- Extensive Protocol Support 17
- 2-4 Introduction 18
- Package Contents 19
- The Router’s Front Panel 20
- The Router’s Rear Panel 21
- 2-8 Introduction 22
- Chapter 3 23
- Initial Configuration 24
- Logging Into Your Router 25
- Figure 3-4: Login result 26
- Changing Your Configuration 27
- Wireless Settings 31
- Default Factory Settings 33
- Chapter 4 35
- Content Filtering 35
- 4-2 Content Filtering 36
- Figure 4-1: Block Sites menu 36
- Content Filtering 4-3 37
- 4-4 Content Filtering 38
- Content Filtering 4-5 39
- Figure 4-4: Schedule menu 39
- 4-6 Content Filtering 40
- Figure 4-5: Logs menu 40
- Content Filtering 4-7 41
- Figure 4-6: Email menu 41
- Table 4-2. Log action buttons 41
- 4-8 Content Filtering 42
- Chapter 5 43
- Maintenance 43
- 5-2 Maintenance 44
- Configuration File Management 47
- 5-6 Maintenance 48
- Upgrading the Router Software 49
- M aintenance 5-9 51
- 5-10 Maintenance 52
- Chapter 6 53
- Adding a Custom Service 57
- Figure 6-5: WAN Setup menu 59
- Disabling the SPI Firewall 60
- Setting the MTU Size 61
- Using Address Reservation 64
- Using a Dynamic DNS Service 65
- Configuring Static Routes 66
- Figure 6-12. UPnP Menu 70
- Chapter 7 73
- Troubleshooting 73
- Lights Never Turn Off 74
- LAN or WAN Port Lights Not On 74
- Troubleshooting 7-3 75
- Troubleshooting 7-5 77
- 7-6 Troubleshooting 78
- Problems with Date and Time 79
- 7-8 Troubleshooting 80
- Appendix A 81
- Technical Specifications 81
- A-2 Technical Specifications 82
- Appendix B 83
- IP Addresses and the Internet 84
- Subnet Addressing 86
- Table 7-2. Netmask Formats 88
- Private IP Addresses 89
- Related Documents 91
- Domain Name Server 91
- IP Configuration by DHCP 92
- Ethernet Cabling 93
- Category 5 Cable Quality 94
- Inside Twisted Pair Cables 94
- Appendix C 99
- Preparing Your Network 99
- C-2 Preparing Your Network 100
- C-4 Preparing Your Network 102
- Windows 95B, 98, and Me 104
- P reparing Your N etwork C-7 105
- Verifying TCP/IP Properties 106
- P reparing Your N etwork C-9 107
- C-10 Preparing Your Network 108
- Preparing Your Network C-11 109
- C-12 Preparing Your Network 110
- Preparing Your Network C-13 111
- C-14 Preparing Your Network 112
- Preparing Your Network C-15 113
- Properties button 114
- 3. Type ipconfig /all 115
- MacOS 8.6 or 9.x 116
- 4. Click Save 117
- Are Login Protocols Used? 118
- 4. Select the IP Address tab 119
- 5. Select the Gateway tab 119
- Computers 120
- Restarting the Network 121
- C-24 Preparing Your Network 122
- Appendix D 123
- Wireless Networking Basics 123
- 802.11 Authentication 125
- Open System Authentication 125
- Shared Key Authentication 126
- Overview of WEP Parameters 127
- Key Size 128
- Wireless Channels 129
- How Does WPA Compare to WEP? 131
- Wired Network with Optional 134
- 802.1x Port Based Network 134
- Access Control 134
- Wireless LAN 134
- Is WPA/WPA2 Perfect? 138
- Product Support for WPA/WPA2 138
- Glossary 141
- -2 Glossary 142
- Glossary -3 143
- -4 Glossary 144
- Glossary -5 145
- -6 Glossary 146
- Glossary -7 147
- -8 Glossary 148
- Glossary -9 149
- -1 0 Glossary 150
- Glossary -1 1 151
- -1 2 Glossary 152
- Glossary -1 3 153
- -1 4 Glossary 154
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