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Reference Manual for the 54 Mbps Wireless ADSL Firewall Router DG834G
D-6 Wireless Networking Basics
202-10006-01
Key Size
The IEEE 802.11b standard supports two types of WEP encryption: 40-bit and 128-bit.
The 64-bit WEP data encryption method, allows for a five-character (40-bit) input. Additionally,
24 factory-set bits are added to the forty-bit input to generate a 64-bit encryption key. (The 24
factory-set bits are not user-configurable). This encryption key will be used to encrypt/decrypt all
data transmitted via the wireless interface. Some vendors refer to the 64-bit WEP data encryption
as 40-bit WEP data encryption since the user-configurable portion of the encryption key is 40 bits
wide.
The 128-bit WEP data encryption method consists of 104 user-configurable bits. Similar to the
forty-bit WEP data encryption method, the remaining 24 bits are factory set and not user
configurable. Some vendors allow passphrases to be entered instead of the cryptic hexadecimal
characters to ease encryption key entry.
128-bit encryption is stronger than 40-bit encryption, but 128-bit encryption may not be available
outside of the United States due to U.S. export regulations.
When configured for 40-bit encryption, 802.11b products typically support up to four WEP Keys.
Each 40-bit WEP Key is expressed as 5 sets of two hexadecimal digits (0-9 and A-F). For
example, “12 34 56 78 90” is a 40-bit WEP Key.
When configured for 128-bit encryption, 802.11b products typically support four WEP Keys but
some manufacturers support only one 128-bit key. The 128-bit WEP Key is expressed as 13 sets of
two hexadecimal digits (0-9 and A-F). For example, “12 34 56 78 90 AB CD EF 12 34 56 78 90”
is a 128-bit WEP Key.
Note: Typically, 802.11b access points can store up to four 128-bit WEP Keys but some 802.11b
client adapters can only store one. Therefore, make sure that your 802.11b access and client
adapters configurations match.
WEP Configuration Options
The WEP settings must match on all 802.11b devices that are within the same wireless network as
identified by the SSID. In general, if your mobile clients will roam between access points, then all
of the 802.11b access points and all of the 802.11b client adapters on the network must have the
same WEP settings.
- Reference Manual for the 1
- 54 Mbps Wireless ADSL 1
- Firewall Router DG834G 1
- Contents 5
- Contents xi 11
- Glossary 11
- Chapter 1 13
- About This Guide 13
- How to Use this Manual 14
- How to Print this Manual 15
- 4 About This Guide 16
- Chapter 2 17
- Introduction 17
- Key Features 18
- Content Filtering 19
- Protocol Support 19
- 2-4 Introduction 20
- What’s in the Box? 21
- The Router’s Front Panel 22
- The Router’s Rear Panel 23
- 2-8 Introduction 24
- Chapter 3 25
- Ethernet Cabling Requirements 26
- How to Connect the Router 29
- LOG IN TO THE DG834G 32
- CONNECT TO THE INTERNET 33
- ISP Does Not Require Login 39
- ISP Does Require Login 39
- ADSL Settings 43
- Chapter 4 45
- Wireless Configuration 45
- Wireless Data 46
- Security Options 46
- Range: Up to 300 Feet 46
- Wireless Configuration 4-3 47
- 4-4 Wireless Configuration 48
- 4-6 Wireless Configuration 50
- Wireless Configuration 4-9 53
- How to Configure WEP 54
- 4-12 Wireless Configuration 56
- Chapter 5 57
- Protecting Your Network 57
- Protecting Your Network 5-3 59
- Firewall Rules 61
- 5-6 Protecting Your Network 62
- Figure 5-4: Rules menu 62
- Protecting Your Network 5-7 63
- 5-8 Protecting Your Network 64
- Protecting Your Network 5-9 65
- 5-10 Protecting Your Network 66
- Order of Precedence for Rules 67
- Services 68
- How to Set Your Time Zone 69
- 5-16 Protecting Your Network 72
- Chapter 6 73
- Managing Your Network 73
- 6-4 Managing Your Network 76
- Managing Your Network 6-5 77
- 6-6 Managing Your Network 78
- Figure 6-6 79
- 6-8 Managing Your Network 80
- Viewing Attached Devices 81
- 6-10 Managing Your Network 82
- Managing Your Network 6-11 83
- Examples of Log Messages 84
- Managing Your Network 6-13 85
- 6-14 Managing Your Network 86
- Figure 6-9: Diagnostics menu 86
- Enabling Remote Management 87
- 6-16 Managing Your Network 88
- Chapter 7 89
- Advanced Configuration 89
- Configuring LAN IP Settings 91
- 7-4 Advanced Configuration 92
- Advanced Configuration 7-5 93
- Configuring Dynamic DNS 95
- How to Configure Dynamic DNS 96
- Using Static Routes 97
- 7-12 Advanced Configuration 100
- 202-10006-01 100
- Chapter 8 101
- Troubleshooting 101
- Power LED Not On 102
- LAN or WAN Port LEDs Not On 102
- Troubleshooting 8-3 103
- ADSL link 104
- Obtaining a WAN IP Address 105
- Request timed out 107
- 8-8 Troubleshooting 108
- Problems with Date and Time 109
- 8-10 Troubleshooting 110
- Appendix A 111
- Technical Specifications 111
- T1.413, G.DMT, G.Lite 112
- ITU Annex A or B 112
- Appendix B 113
- Network and Routing Basics 113
- What is a Router? 114
- Routing Information Protocol 114
- IP Addresses and the Internet 114
- Subnet Addressing 117
- Table 8-2. Netmask Formats 118
- Private IP Addresses 119
- Related Documents 121
- Domain Name Server 122
- IP Configuration by DHCP 122
- Ethernet Cabling 123
- Category 5 Cable Quality 124
- Inside Twisted Pair Cables 125
- Appendix C 129
- Preparing Your Network 129
- C-2 Preparing Your Network 130
- Windows 95B, 98, and Me 132
- Preparing Your Network C-5 133
- Verifying TCP/IP Properties 134
- Preparing Your Network C-7 135
- C-8 Preparing Your Network 136
- Preparing Your Network C-9 137
- C-10 Preparing Your Network 138
- Preparing Your Network C-11 139
- C-12 Preparing Your Network 140
- Preparing Your Network C-13 141
- Properties button 142
- 3. Type ipconfig /all 143
- MacOS 8.6 or 9.x 144
- 4. Click Save 145
- Are Login Protocols Used? 146
- 4. Select the IP Address tab 147
- 5. Select the Gateway tab 147
- Computers 148
- Restarting the Network 149
- C-22 Preparing Your Network 150
- Appendix D 151
- Wireless Networking Basics 151
- Authentication and WEP 152
- 802.11b Authentication 153
- Open System Authentication 153
- PWR TEST 154
- Key Size 156
- WEP Configuration Options 156
- Wireless Channels 157
- Glossary 159
- 2 Glossary 160
- 4 Glossary 162
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