LinksysメーカーWRT54Gの使用説明書/サービス説明書
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A Division of Cisco Systems, Inc . ® Model No . Broadband Router Wir eless- G WR T54G User Guide GHz 2.4 54 Mbps WIRELESS.
Wireless-G Broad band Router Copyright and T rademarks Specifications are subject to change without notice . L inksys is a registered tradema rk or trademark of Cisco Systems, Inc . and/or its affiliates in the U.S . and certain other countries. Copyright © 2003 Cisco Systems, Inc.
Wireless-G Broad band Router Table of Contents Chapter 1: Introduction 1 Welcome 1 What’s in this Guide? 2 Chapter 2: Planning your Wireless Network 4 Network Topology 4 Roaming 4 Network Layout 5 C.
Wireless-G Broad band Router The Administration Tab - Management 32 The Administration Tab - Log 2 The Administration Tab - Diagnostics 33 The Administration Tab - Factory Defaults 34 The Administrati.
Wireless-G Br oadband Router List of Figures Figure 3-1: The Broadband Router’s Back Panel 6 Figure 3-2: The Broadband Router’s Front Panel 7 Figure 4-1: Connecting Your Internet Connection 8 Figu.
Wireless-G Br oadband Router Figure 6-18: Wireless Tab - Adva nced Wireless Settings 24 Figure 6-19: Security Tab - Firewall 26 Figure 6-20: Wireless Tab - Basic Wireless Settings 26 Figure 6-21: Wire.
Wireless-G Br oadband Router Figure B-12: WEP 59 Figure B-13: 802.11b WEP Key Setting 59 Figure C-1: Upgrade Firmware 60 Figure E-1: IP Configuration Screen 62 Figure E-2: MAC Address/Adapter Address .
1 Chapter 1: Introductio n Welcome Wireless-G Broad band Router Chapter 1: Introduction We l c o m e Thank you for choosing the Linksys Wireless-G Broadband Router . The Wireless-G Broadband Router will allow you to network wirelessly better than ever , sharing Internet Access, files and fun, easily and securely .
2 Chapter 1: Introductio n What’s in this Guide? Wireless-G Broad band Router What’ s in this Gu ide? This user guide covers the steps for setting up and using the Wireless-B Media Adapter . • Chapter 1: Introduction This chapter describes the Adapter’s applications and this User Guide .
3 Chapter 1: Introductio n What’s in this Guide? Wireless-G Broad band Router • Appendix G: Specifications This appendix provides the technical specifications for the Router . • Appendix H: Warranty Information This appendix supplies the warranty information for the Router .
4 Chapter 2: Planning your Wireless Network Network Topology Dual-Band Wireless Access P oint Chapter 2: Planning your Wireless Network Network T opology A wireless LAN is a group of computers, each equipped with one Linksys wireless adapter . Comp uters in a wireless LAN must be configured to share the same radio channel.
5 Chapter 2: Planning your Wireless Network Network Layout Dual-Band Wireless Access P oint Network La yout The Wireless-G Broadband Router has been specifically designed for use with both your 802.11b and 802.11g products. Now , products using these standards can communicate with each other .
6 Chapter 3: Getting to Know the Wireless-G Broadband Router The Back Panel Wireless-G Broad band Router Chapter 3: Getting to Know the Wireless-G Broadband Router The Back P anel The Broadband Router's ports, where the cables are connected, are located on the back panel.
7 Chapter 3: Getting to Know the Wireless-G Broadband Router The Front Panel Wireless-G Broad band Router The Front P anel TheRouter's LEDs, where information about network acti vity is displayed, are located on the front panel. Po w e r Green. The Power LED lights up and will stay on while the Router is powered on.
8 Chapter 4: Connecting the Wire less-G Broadband Router Hardware Installation Wireless-G Broad band Router Chapter 4: Connecting the Wireless-G Broadband Router Hardw are Installation 1.
9 Chapter 4: Connecting the Wire less-G Broadband Router Hardware Installation Wireless-G Broad band Router 4. Connect your network PCs or Ethernet devices to one of the Broadband Router ’ s numbered ports with a standard Ethernet network cable.
10 Chapter 4: Connecting the Wire less-G Broadband Router Hardware Installation Wireless-G Broad band Router.
10 Chapter 5: Configuring th e PCs Overview Wireless-G Broad band Router Chapter 5: Configuring the PCs Overview The instructions in this chapter will help you configure each of your computers to be able to communicate with the Router .
11 Chapter 5: Configuring th e PCs Configuring Windows 2000 PCs Wireless-G Broad band Router 4. Now click the Gateway tab , and verify that the Installed Gateway field is blank. Click the OK button. 5. Click the OK button again. Windows may ask you fo r the or iginal Windows installation disk or additional files.
12 Chapter 5: Configuring th e PCs Configuring Windows XP PCs Wireless-G Broad band Router Configuring Windows XP PCs The following instructions assume you are running Windows XP with the default interface.
13 Chapter 5: Configuring th e PCs Configuring Windows XP PCs Wireless-G Broad band Router Figure 5-8: IP Address.
14 Chapter 6: Configuring the Wireless-G Broadb and Router Overview Wireless-G Broad band Router Chapter 6: Configuring the Wireless-G Broadband Router Overview The Broadband Router has been designed to be function al right out of the box with the default settings in the Setup Wizard.
15 Chapter 6: Configuring the Wireless-G Broadb and Router The Setup Tab - Basic Setu p Wireless-G Broad band Router The Setup T ab - Basic Setup The first screen that appears displays the Setup tab. This allo ws you to change the Broadband Router's general settings.
16 Chapter 6: Configuring the Wireless-G Broadb and Router The Setup Tab - Basic Setu p Wireless-G Broad band Router • PPP oE . Som e DSL-based ISPs use PPPoE (Point-to-P oint Protocol over Ethernet) to establish Inter net connections. If you are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoE.
17 Chapter 6: Configuring the Wireless-G Broadb and Router The Setup Tab - Basic Setu p Wireless-G Broad band Router Optional Settings Some of these settings may be required by your IS P . Verify with your ISP before making any changes. Router Name . In this field, you can type a name of up to 39 characters to represent the Router .
18 Chapter 6: Configuring the Wireless-G Broadb and Router The Setup Tab - Basic Setu p Wireless-G Broad band Router Maximum Number of DHCP Users . Enter the maximum number of PCs that you want the DHCP ser ver to assign IP addresses to. This number cannot be greater than 253.
19 Chapter 6: Configuring the Wireless-G Broadb and Router The Setup Tab - DDNS Wireless-G Broad band Router The Setup T ab - DDNS The Router offers a Dynamic Domain Name System (DDN S) feature . DDNS lets you assign a fixed host and domain name to a dynamic Internet IP address.
20 Chapter 6: Configuring the Wireless-G Broadb and Router The Setup Tab - MAC Ad dress Clone Wireless-G Broad band Router The Setup T ab - MAC Addr ess Clone A MAC address is a 12-digit code assigned to a unique piece of hardware for identification. Some ISPs will require you to register a MAC address in order to access the Internet.
21 Chapter 6: Configuring the Wireless-G Broadb and Router The Setup Tab - Advan ced Routing Wireless-G Broad band Router The Setup T ab - Advanced Routing This tab is use d to set up the Router’s advanced functions. Operating Mode allows you t o select the ty pe(s) of advanced functions you use .
22 Chapter 6: Configuring the Wireless-G Broadb and Router The Wireless Tab - Basic Wireless Settings Wireless-G Broad band Router The Wireless T ab - Basic Wir eless Settings The basic settings for wireless networking are set on this screen. Wireless Netw ork Mode .
23 Chapter 6: Configuring the Wireless-G Broadb and Router The Wireless Tab - Wireless MAC Filter Wireless-G Broad band Router The Wireless T ab - Wir eless MAC Filter Wireless access can be filtered by using the MAC addresses of the wireless devices transmitting within your network’ s radius.
24 Chapter 6: Configuring the Wireless-G Broadb and Router The Wireless Tab - Advanced Wireless Settings Wireless-G Broad band Router The Wireless T ab - Advanced Wir eless Settings This tab is used to set up the Router’s adv anced wireless functions.
25 Chapter 6: Configuring the Wireless-G Broadb and Router The Wireless Tab - Advanced Wireless Settings Wireless-G Broad band Router Fragmentation Threshold . This value specifies the maximum size for a packet before data is fragmented into multiple packets.
26 Chapter 6: Configuring the Wireless-G Broadb and Router The Security Tab - Firewall Wireless-G Broad band Router The Security T ab - Firewall Block W AN Requests .
27 Chapter 6: Configuring the Wireless-G Broadb and Router The Security Tab - Wireless Security Wireless-G Broad band Router The Security T ab - Wireless Security The Wireless Security settings configure the security of y our wireless network. There are four wireless security mode options supported by the Router , WP A, RADIUS , and W EP .
28 Chapter 6: Configuring the Wireless-G Broadb and Router The Security Tab - Wireless Security Wireless-G Broad band Router Radius . WEP used in coordination with a RADIUS ser ver . (This should only be used when a RADIUS server is connected to the Router .
29 Chapter 6: Configuring the Wireless-G Broadb and Router The Access Restrictions Tab Wireless-G Broad band Router The Access Restrictions T ab The Access Restrictions tab allows you to block or allow net work access as well as manage specific kinds of Internet usage.
30 Chapter 6: Configuring the Wireless-G Broadb and Router The Applications and Gaming Tab - Port Rang e Forward Wireless-G Broad band Router The Applications and Gaming T ab - P ort Range Forward The.
31 Chapter 6: Configuring the Wireless-G Broadb and Router The Applications and Gaming Tab - DMZ Wireless-G Broad band Router The Applications and Gaming T ab - DMZ The DMZ feature allows one network user to be exposed to the Internet for use of a special-purpose ser vice such as Internet gaming or videoconferencing.
32 Chapter 6: Configuring the Wireless-G Broadb and Router The Administration Ta b - Management Wireless-G Broad band Router The Administration T ab - Management This section of the Administration tab allows the network’ s a dministrator to manage specific Router functions for access and security .
33 Chapter 6: Configuring the Wireless-G Broadb and Router The Administration Tab - Diagnostics Wireless-G Broad band Router The Administration T ab - Diagnostics The diagnostic tests (Ping and T raceRoute) allow you to check the connections of yo ur network components.
34 Chapter 6: Configuring the Wireless-G Broadb and Router The Administration Tab - Factory Defaults Wireless-G Broad band Router The Administration T ab - Factory Defaults Click the Ye s button to reset all configuration settings to their default values, and then click the Save Settings button.
35 Chapter 6: Configuring the Wireless-G Broadb and Router The Status Tab - Rou ter Wireless-G Broad band Router The Status T ab - Router The Router screen on the Status T ab displays the Router ’ s current status. Firmware Version . This is the Router’ s current fir mware .
36 Chapter 6: Configuring the Wireless-G Broadb and Router The Status Tab - Loca l Network Wireless-G Broad band Router The Status T ab - Local Network The Local Network screen on the Status T ab displays the status of your network. MAC Address . This is the Router’ s MAC Address, as see n on your local, Ethernet network.
37 Chapter 6: Configuring the Wireless-G Broadb and Router The Status Tab - Wireles s Wireless-G Broad band Router The Status T ab - Wireless The Wireless screen on the Status T ab displays the statu s of your wireless network. MAC Address . This is the Router’ s MAC Address, as see n on your local, wireless network.
38 Appendix A: Troublesh ooting Common Problems and So lutions Wireless-G Broad band Router Appendix A: T roubleshooting This appendix consists of two parts: “Common Problems and Solutions” and “F requently Asked Questions. ” Provided are possible solutions to problems that may occu r during the installation and operation of the Router .
39 Appendix A: Troublesh ooting Common Problems and So lutions Wireless-G Broad band Router 7. T oward the bottom of the window , select Use the following DNS server addresses, and enter the Preferred DNS server and Alternative DNS ser ver (pro vided by your ISP).
40 Appendix A: Troublesh ooting Common Problems and So lutions Wireless-G Broad band Router C In the command prompt, type ping followed b y your Internet or W AN IP address and press the En ter key . The Internet or WAN IP Address can be found on the Sta tus screen of the Router’s web-based utility .
41 Appendix A: Troublesh ooting Common Problems and So lutions Wireless-G Broad band Router 7. I need to set up a serve r behind my R outer and make it available t o the public. T o use a ser ver like a web , ftp, or mail server , you need to know the respective port numbers they are using .
42 Appendix A: Troublesh ooting Common Problems and So lutions Wireless-G Broad band Router 4. Check the protocol you will be using, TCP and/or UDP . 5. Enter the IP address of the PC or network device that yo u want the port server to go to. For example , if the web server ’ s Ethernet adapter IP address is 192.
43 Appendix A: Troublesh ooting Common Problems and So lutions Wireless-G Broad band Router 1. Access the Router’ s web-based utility by going to http ://192.168.1.1 or the IP addr ess of the Router . Enter the default password admin, and click the Administrations => Management tab .
44 Appendix A: Troublesh ooting Common Problems and So lutions Wireless-G Broad band Router • Set a static IP address on the PC; refer to “Problem #1, I need to set a static IP address. ” Use the following IP address settings for the computer you are using: IP Address: 192.
45 Appendix A: Troublesh ooting Frequently Asked Questions Wireless-G Broad band Router 17. The P ower LED ke eps flashing . The Power LED flashes when the device is first powered up. Meantime , the system will boot up itself and check for proper operation.
46 Appendix A: Troublesh ooting Frequently Asked Questions Wireless-G Broad band Router Does the Internet connection o f the Router support 100Mbps Ethernet? The Router’ s current hardwar e design s.
47 Appendix A: Troublesh ooting Frequently Asked Questions Wireless-G Broad band Router the same time , even if on the same LAN (not a problem with 1.0.1.3). As far as hosting games, the HL ser ver d oes not need to be in the DMZ. Just forward port 27015 to the local IP address of the server computer .
48 Appendix A: Troublesh ooting Frequently Asked Questions Wireless-G Broad band Router What is DMZ H osting? Demilitarized Zone (DMZ) allows one IP address (computer) to be exposed to the Internet. Some ap plications require multiple TCP/IP ports to be open.
49 Appendix A: Troublesh ooting Frequently Asked Questions Wireless-G Broad band Router • Multi-Channel Roaming • Automatic Rate Selection • RTS/CTS feature • Fragmentation • Power Managemen.
50 Appendix A: Troublesh ooting Frequently Asked Questions Wireless-G Broad band Router What is Spread Spec trum? Spread Spectrum technology is a wideband radio frequency tec hnique developed by the militar y for use in reliable , secure , mission-critical communications systems.
51 Appendix A: Troublesh ooting Frequently Asked Questions Wireless-G Broad band Router How do I resolve issues with signal loss? There is no way to know the exact range of your wireless network without testing. Every obstacle placed between the Router and a wireless PC will create signal loss.
52 Appendix B: Wireless Security A Brief Overview Wireless-G Broad band Router Appendix B: Wireless Security A Brief Overview Whenever data - in the form of files, emails, or messages - is transmitted over your wireless network, it is open to attacks.
53 Appendix B: Wireless Security What Are The Risks? Wireless-G Broad band Router But even WEP has its problems. WEP's encr yption algorithm is referred to as "simple", which also means "weak", because the technology that scrambles the wireless signal isn't too hard to crack for a persistent hacker .
54 Appendix B: Wireless Security Maximizing Wireless Security Wireless-G Broad band Router Active Attacks Hackers use Active Attacks for three purposes: 1) stealing data, 2) using your network, and 3) modifying your network so it's easier to hack in the next time .
55 Appendix B: Wireless Security Maximizing Wireless Security Wireless-G Broad band Router examples below , your implementation and administration of network security measures is the key to maximizing wireless security . No preventative measure will guarantee network security but it will make it more difficult for someone to hack into your network.
56 Appendix B: Wireless Security Maximizing Wireless Security Wireless-G Broad band Router 5) SS ID There are a few things you can do to make your SSID more secure: a. Disable Broadcast b . Make it unique c . Change it often Most wireless networking devices will give you the option of broadcasting the SSID .
57 Appendix B: Wireless Security Maximizing Wireless Security Wireless-G Broad band Router PCs unprotected by a firewall router should at leas t run firew all software , and all PCs should run up-to-date antiviral software . B. W E P Wired Equivalent Privac y (WEP ) is often looked upon as a panacea for wireless security concerns.
58 Appendix B: Wireless Security Maximizing Wireless Security Wireless-G Broad band Router The solution, then, is to segment your network up into multiple groups. If your network had 80 users and you used four WEP keys, a hacker would have access to only ¼ of your wireless network resources.
59 Appendix B: Wireless Security Maximizing Wireless Security Wireless-G Broad band Router WP A Pre-Shared Key If you do not have a RADIUS ser ver , Select the type of algorithm , TKIP or AES, enter a.
60 Appendix C: Upgradin g Firmware Wireless-G Broad band Router Appendix C: Upgrading Firmware The Access Point's firmware is upgraded through the Web-Utility's Help tab . Follow these instru ctions: 1. Download the firmware from Linksys's website at www.
61 Appendi x D: Wind ows Hel p Wireless-G Broad band Router Appendix D: Windows Help All wireless products require Microsoft Windows. Windows is the most used operating system in the world and comes with many features that help make networking easier .
62 Appendix E: Windows 98 or Me Instructions Wireless-G Broad band Router Appendix E: Finding the MA C Address and IP Address for Y our Ethernet Adapter This section describes how to find the MAC address for your computer’s Ethernet adapter so you can use the MAC filtering and/or MAC address cloning feature of the Router .
63 Appendix E: For the Router’s Web-based Utility Wireless-G Broad band Router 3. Write down the Physical Address as shown on your computer screen (Figure C-3); it is the MAC address for your Ethernet adapter . This appears as a series of numb ers and letters.
64 Appendix F: Glossary Wireless-G Broad band Router Appendix F: Glossar y 802.11a - An IEEE wireless networking standard that specifies a maximum data transfer rate of 54Mbps and an operating frequency of 5GHz. 802.11b - An IEEE wireless networking standard that specifies a maximum data transfer rate of 11Mbps and an operating frequency of 2.
65 Appendix F: Glossary Wireless-G Broad band Router Buffer - A block of memor y that temporarily holds data to be worked on later when a device is currently too busy to accept the data. Cable Modem - A device that con nects a computer to the cable television network, which in turn connects to the Internet.
66 Appendix F: Glossary Wireless-G Broad band Router Dynamic IP Address - A temporar y IP address assigned by a DHCP server . Encryption - Encoding data to prevent it from being read by unauthorized people . Ethernet - An IEEE standard network protocol that specifies how data is placed on and retrieved from a common transmission medium.
67 Appendix F: Glossary Wireless-G Broad band Router IPCONFIG - A Windows 2000 and XP utility that displays the IP address for a particular networking device. IPSec (Internet Pro tocol Security) - A VPN protocol used to implem ent secure exchange of packets at the IP layer .
68 Appendix F: Glossary Wireless-G Broad band Router PPP oE (Point to Point Proto col over Ethernet) - A type of broadband connection that provides authentication (username and password) in addition to data transport.
69 Appendix F: Glossary Wireless-G Broad band Router TCP/IP (T ransmission Control Protocol/Inter net Protocol) - A network protocol fo r transmitting data that requires acknowledgement from the recipient of data sent. Te l n e t - A user command and TCP/IP protocol used for accessing remote PCs.
70 Appendix G: Specification s Wireless-G Broad band Router Appendix G: Specifications Standards IEEE 802.3, 802.3u, 802.11g and 802.11b Channels 11 Channels (US , Canada) 13 Channels (Europe) 14 Chan.
71 Appendix G: Specification s Wireless-G Broad band Router.
72 Appendix H: Warranty Informat ion Wireless-G Br oadband Router Appendix H: W arranty Information LIMITED WARRANTY Linksys warrants to the original end user purchaser ("Y ou") that, for a .
73 Appendix I: Regulato ry Information Wireless-G Broad band Router Appendix I: Regulator y Information FCC ST A TEMENT This Wireless-G Broadband Router has been tested and complies with the specifications for a Class B digital device , pursuant to Part 15 of th e FCC Rules.
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75 Appendix I: Regulato ry Information Wireless-G Broad band Router Italia I: E' necessaria la concessione ministeriale anche per l'uso interno. Verificare con i rivenditori la procedura da seguire . L'uso per installazione in e sterni non e' per messa.
76 Appendix J: Contact Informa tion Wireless-G Br oadband Router Appendix J: Contact Information Need to contact Linksys? Visit us online for information on the latest products and updates to your existing products at: http://www .linksys.com or ftp.linksys.
デバイスLinksys WRT54Gの購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Linksys WRT54Gをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはLinksys WRT54Gの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Linksys WRT54Gの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Linksys WRT54Gで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Linksys WRT54Gを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はLinksys WRT54Gの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Linksys WRT54Gに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちLinksys WRT54Gデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
