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ii
Contents
Observe Placement and Range Guidelines
.............................................................
4-2
Configuring Wireless Settings
........................................................................................
4-3
Wireless Network Settings
.......................................................................................
4-4
Wireless Access Point
..............................................................................................
4-4
Restricting Wireless Access by MAC Address
.........................................................
4-4
Configuring Wired Equivalent Privacy (WEP)
..........................................................
4-6
Chapter 5
Protecting Your Network
.....................................................................................................
5-1
Protecting Access to Your CG814WG v2 Gateway
........................................................
5-1
Blocking Keywords, Sites, and Services
........................................................................
5-2
Blocking Keywords and Domains
.............................................................................
5-3
Using MAC Filtering
........................................................................................................
5-4
Blocking Access by Time of Day
..............................................................................
5-6
Using Port Blocking
........................................................................................................
5-6
Port Forwarding
..............................................................................................................
5-7
Using Port Triggering
......................................................................................................
5-9
Setting Up A Default DMZ Host
....................................................................................
5-10
Respond to Ping on Internet WAN Port
.................................................................
5-11
Enabling or Disabling Content Filtering Services
.........................................................
5-11
Chapter 6
Managing Your Network
......................................................................................................
6-1
Network Status Information
............................................................................................
6-1
Viewing Gateway Status
..........................................................................................
6-1
Connection Status
....................................................................................................
6-3
Configuring LAN IP Settings
...........................................................................................
6-4
LAN IP Setup
..................................................................................................................
6-4
Using the Gateway as a DHCP Server
....................................................................
6-5
Viewing and Emailing Logged Information
.....................................................................
6-6
Enabling Logs Event E-mail Notification
..................................................................
6-6
Erasing Configuration
.....................................................................................................
6-7
Running Diagnostic Utilities
............................................................................................
6-8
Enabling Remote Management Access
.........................................................................
6-9
Enabling Remote Management Access After a Reset
...................................................
6-9
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Chapter 7
Troubleshooting
...................................................................................................................
7-1
Basic Functions
..............................................................................................................
7-1
Power LED Not On
...................................................................................................
7-2
All LEDs Stay On
......................................................................................................
7-2
Local Link LEDs Not On
...........................................................................................
7-2
Cable Link LED Not On
............................................................................................
7-2
Troubleshooting the Web Configuration Interface
..........................................................
7-3
Troubleshooting the ISP Connection
..............................................................................
7-4
Troubleshooting a TCP/IP Network Using a Ping Utility
.................................................
7-4
Testing the LAN Path to Your Gateway
....................................................................
7-4
Testing the Path from Your PC to a Remote Device
................................................
7-5
Appendix A
Technical Specifications
....................................................................................................
A-1
Appendix B
Networks, Routing, and Firewall Basics
...........................................................................
B-1
Related Publications
......................................................................................................
B-1
Basic Router Concepts
..................................................................................................
B-1
What is a Router?
...................................................................................................
B-1
Routing Information Protocol
...................................................................................
B-2
IP Addresses and the Internet
.................................................................................
B-2
Netmask
..................................................................................................................
B-4
Subnet Addressing
..................................................................................................
B-4
Private IP Addresses
...............................................................................................
B-7
Single IP Address Operation Using NAT
.................................................................
B-7
MAC Addresses and Address Resolution Protocol
.................................................
B-8
Related Documents
.................................................................................................
B-9
Domain Name Server
..............................................................................................
B-9
IP Configuration by DHCP
....................................................................................
B-10
Internet Security and Firewalls
....................................................................................
B-10
What is a Firewall?
................................................................................................
B-10
Stateful Packet Inspection
......................................................................................
B-11
Denial of Service Attack
.........................................................................................
B-11
Wireless Networking Overview
.....................................................................................
B-11
Infrastructure Mode
................................................................................................
B-11
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Ad Hoc Mode (Peer-to-Peer Workgroup)
..............................................................
B-12
Network Name: Extended Service Set Identification (ESSID)
..............................
B-12
Authentication and WEP
..............................................................................................
B-13
802.11b Authentication
..........................................................................................
B-13
Open System Authentication
.................................................................................
B-14
Shared Key Authentication
....................................................................................
B-14
Overview of WEP Parameters
..............................................................................
B-15
Key Size
................................................................................................................
B-16
WEP Configuration Options
..................................................................................
B-16
Wireless Channels
.......................................................................................................
B-17
Ethernet Cabling
..........................................................................................................
B-18
Uplink Switches and Crossover Cables
................................................................
B-19
Cable Quality
.........................................................................................................
B-19
Appendix C
Preparing Your Network to Work with a Router
...............................................................
C-1
What You Need To Use a Router with a Broadband Modem
.........................................
C-1
Cabling and Computer Hardware
............................................................................
C-1
Computer Network Configuration Requirements
....................................................
C-1
Internet Configuration Requirements
......................................................................
C-2
Where Do I Get the Internet Configuration Parameters?
........................................
C-2
Record Your Internet Connection Information
.........................................................
C-3
Preparing Your Computers for TCP/IP Networking
.......................................................
C-4
Configuring Windows 95, 98, and Me for TCP/IP Networking
.......................................
C-5
Installing or Verifying Windows Networking Components
.......................................
C-5
Enabling DHCP to Automatically Configure TCP/IP Settings in
Windows 95B, 98, and Me
......................................................................................
C-6
Selecting the Windows’ Internet Access Method
....................................................
C-8
Verifying TCP/IP Properties
....................................................................................
C-8
Configuring Windows NT4, 2000 or XP for IP Networking
............................................
C-9
Installing or Verifying Windows Networking Components
.......................................
C-9
Configuring DHCP of TCP/IP in Windows XP, 2000, or NT4
................................
C-10
DHCP Configuration of TCP/IP in Windows XP
...................................................
C-10
DHCP Configuration of TCP/IP in Windows 2000
................................................
C-12
DHCP Configuration of TCP/IP in Windows NT4
..................................................
C-14
Verifying TCP/IP Properties for Windows XP, 2000, and NT4
..............................
C-15
Configuring the Macintosh for TCP/IP Networking
......................................................
C-16
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v
MacOS 8.6 or 9.x
..................................................................................................
C-16
MacOS X
...............................................................................................................
C-16
Verifying TCP/IP Properties for Macintosh Computers
.........................................
C-17
Verifying the Readiness of Your Internet Account
.......................................................
C-17
Are Login Protocols Used?
...................................................................................
C-18
What Is Your Configuration Information?
..............................................................
C-18
Obtaining ISP Configuration Information for Windows Computers
.......................
C-19
Obtaining ISP Configuration Information for Macintosh Computers
.....................
C-20
Restarting the Network
................................................................................................
C-20
Appendix D
Wireless Networking Basics
..............................................................................................
D-1
Wireless Networking Overview
......................................................................................
D-1
Infrastructure Mode
.................................................................................................
D-1
Ad Hoc Mode (Peer-to-Peer Workgroup)
................................................................
D-2
Network Name: Extended Service Set Identification (ESSID)
................................
D-2
Wireless Channels
..................................................................................................
D-2
WEP Wireless Security
..................................................................................................
D-4
WEP Authentication
................................................................................................
D-4
WEP Open System Authentication
.........................................................................
D-5
WEP Shared Key Authentication
............................................................................
D-6
How to Use WEP Parameters
.................................................................................
D-8
WPA Wireless Security
..................................................................................................
D-8
How Does WPA Compare to WEP?
........................................................................
D-9
How Does WPA Compare to IEEE 802.11i?
........................................................
D-10
What are the Key Features of WPA Security?
......................................................
D-10
Is WPA Perfect?
....................................................................................................
D-16
Product Support for WPA
......................................................................................
D-16
Glossary
..............................................................................................................................
G-1
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