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Reference Manual for the 54 Mbps Wireless ADSL Firewall Router DG834G
B-2 Network and Routing Basics
202-10006-01
What is a Router?
A router is a device that forwards traffic between networks based on network layer information in
the data and on routing tables maintained by the router. In these routing tables, a router builds up a
logical picture of the overall network by gathering and exchanging information with other routers
in the network. Using this information, the router chooses the best path for forwarding network
traffic.
Routers vary in performance and scale, number of routing protocols supported, and types of
physical WAN connection they support. The DG834G 54 Mbps Wireless ADSL Firewall Router
is a small office router that routes the IP protocol over a single-user broadband connection.
Routing Information Protocol
One of the protocols used by a router to build and maintain a picture of the network is the Routing
Information Protocol (RIP). Using RIP, routers periodically update one another and check for
changes to add to the routing table.
The DG834G wireless router supports both the older RIP-1 and the newer RIP-2 protocols.
Among other improvements, RIP-2 supports subnet and multicast protocols. RIP is not required
for most home applications.
IP Addresses and the Internet
Because TCP/IP networks are interconnected across the world, every machine on the Internet must
have a unique address to make sure that transmitted data reaches the correct destination. Blocks of
addresses are assigned to organizations by the Internet Assigned Numbers Authority (IANA).
Individual users and small organizations may obtain their addresses either from the IANA or from
an Internet service provider (ISP). You can contact IANA at www.iana.org.
The Internet Protocol (IP) uses a 32-bit address structure. The address is usually written in dot
notation (also called dotted-decimal notation), in which each group of eight bits is written in
decimal form, separated by decimal points.
For example, the following binary address:
11000011 00100010 00001100 00000111
is normally written as:
195.34.12.7
- 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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