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Wireless-G Broadband Router with 2 Phone Ports
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Appendix B: Wireless Security
Security Threats Facing Wireless Networks
Security Threats Facing Wireless Networks
Wireless networks are easy to find. Hackers know that in order to join a wireless network, wireless networking
products first listen for “beacon messages”. These messages can be easily decrypted and contain much of the
network’s information, such as the network’s SSID (Service Set Identifier). Here are the steps you can take:
Change the administrator’s password regularly. With every wireless networking device you use, keep in
mind that network settings (SSID, WEP keys, etc.) are stored in its firmware. Your network administrator is the
only person who can change network settings. If a hacker gets a hold of the administrator’s password, he, too,
can change those settings. So, make it harder for a hacker to get that information. Change the administrator’s
password regularly.
SSID. There are several things to keep in mind about the SSID:
1. Disable Broadcast
2. Make it unique
3. Change it often
Most wireless networking devices will give you the option of broadcasting the SSID. While this option may be
more convenient, it allows anyone to log into your wireless network. This includes hackers. So, don’t broadcast
the SSID.
Wireless networking products come with a default SSID set by the factory. (The Linksys default SSID is
“linksys”.) Hackers know these defaults and can check these against your network. Change your SSID to
something unique and not something related to your company or the networking products you use.
- Wireless-G 1
- Copyright and Trademarks 3
- How to Use this Guide 3
- Table of Contents 5
- Vonage 103 6
- Linksys 103 6
- List of Figures 7
- What’s in this Guide? 10
- Chapter 1: Introduction 11
- Network Topology 13
- Network Layout 14
- The Back Panel 15
- The Front Panel 16
- Overview 17
- Connection Instructions 18
- Placement Options 19
- Wall-Mount Option 20
- Wireless 22
- Security 22
- Access Restrictions 23
- Applications & Gaming 23
- Administration 23
- The Setup Tab - Basic Setup 25
- Static IP 26
- Network Setup 27
- Router IP 28
- The Setup Tab - DDNS 29
- DynDNS.org 30
- MAC Clone 31
- Advanced Routing 32
- Wireless Settings 34
- Wireless Security 35
- Wireless MAC Filter 38
- Advanced Wireless Settings 39
- The Security Tab - Firewall 41
- Filter IP Address Range 42
- Filter Port Range 42
- Filter MAC Address 42
- Block WAN Requests 43
- Access Control 44
- Port Range Forwarding 45
- Port Triggering 46
- UPnP Forwarding 47
- Router Password 53
- The Administration Tab - Log 54
- Ping Test 56
- Traceroute Test 56
- Local Network 57
- The Status Tab - Router 58
- The Status Tab - Wireless 60
- The Status Tab - Voice 61
- The Voice Tab 62
- Appendix A: Troubleshooting 63
- Common Problems and Solutions 64
- For Windows 2000: 65
- For Windows XP: 65
- For Netscape 4.7 or higher: 74
- Frequently Asked Questions 77
- Appendix B: Wireless Security 87
- Ethernet Adapter 91
- Appendix D: Windows Help 93
- Appendix E: Glossary 95
- Appendix F: Specifications 103
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