NETGEAR WGM124 инструкция обслуживания

December 2004 Version 1.0 December 2004 NETGEAR , Inc. 4500 Great America Parkway Santa Clara, CA 95 054 USA NETGEAR Wi reless Router Setup Manual[...]

ii December 2004 © 2004 by NETGEAR, Inc. All ri ghts reserved. December 2004. T rademarks NETGEAR is a tr ademark of Netge ar , Inc. Microsoft, W indows, and W indow s NT are registered trademar ks of Microsoft Corporation. Other brand and product names are registered tradem arks or trademarks of their respective holders. St atement of Conditions [...]

December 2004 iii Bestätigung des Hers tellers/Importe urs Es wird hiermit bestätigt, daß das Pre-N W i reless Router WGM124 ge mäß der im BMP T -Amt sblVfg 243/1991 und Vfg 46/1992 aufgeführten Bestimmungen entstört ist. Das vorschrifts mäßige Betreiben ei niger Geräte (z.B. T estsender) kann jedoch gewissen Beschränkungen unterli egen.[...]

December 2004 iv Product and Publication Det ails Model Number: WGM124 Publication Date: December 2004 Product Family: router Product Name: Pre-N Wireless Router WGM124 Home or Business Prod uc t: Home Language: Engl ish[...]

Contents v December 2004 Content s Chapter 1 About This Guide Audience, Conventions, and Formats ............. ... ............. ................ ............. ............. ..... 1-1 How to Use This Manual .................... ................ ............. ................ ................ ............. .. 1-2 How to Print this Manual . .........[...]

December 2004 vi Contents Erasing the Configuration ... ............. ................ ................ ............. ................ ............ 5-3 Upgrading the Wireless Router Software . .... ......... ................ ............. ............. ............... 5-3 Chapter 6 T roubleshooting Common Problems Basic Functioning ............... [...]

Contents vii December 2004 Ethernet Cabling .......... ... .... ... ............. ... ... .... ... ... ... ... .... ............. ... ... ... .... ... ... ... ... .......... B-1 1 Category 5 Cable Quality .......... ................ ............. ................ ............. ............. ..... B-12 Inside T wisted Pair Cables ...................[...]

December 2004 viii Contents Appendix D Wireless Networking Basics Wireless Networking Overview ........ ... ... ... .... ... ... ... ... ............. .... ... ... ... .... ... ... ... ... .... ... ... . D-1 Infrastructure Mode .. .......... ....... ............. ............ ................. ............. ............ ........... D-1 Ad Hoc Mode [...]

About This Guide 1 December 2004 Chapter 1 About This Guide This chapter describes the intended audience, sc ope, conventions, and formats of this manual. Audience, Conventions, and Format s This reference manual assumes that the reader has basic compute r and Internet skills. However , basic computer network, Internet, and firewall tech nologies t[...]

NETGEAR Wireless Router Setup Manua l 2 About This Guide December 2004 How to Use This Manual The HTML version of this ma nual includes the following: • Buttons, and , for browsing forwards or backwards through the manual one p age at a time • A button that displays the table of cont ents and an button. Double-click on a link in the table of co[...]

NETGEAR Wireless Router Setup Manual About This Guide 3 December 2004 How to Print this Manual T o print this manual you can choose one of the fo llowing several options, a ccording to your needs. • Printing a Page in the HTML V iew . Each page in the HTML version of the manu al is dedicated to a major topic. Use the Print button on the brows er [...]

NETGEAR Wireless Router Setup Manua l 4 About This Guide December 2004[...]

Getting to Know Your NETGEAR Wireless Router 2-1 December 2004 Chapter 2 Getting to Know Y our NETGEAR W ireless Router NETGEAR wireless routers provide connections for multiple computers to th e Internet through an external broadband access device such as a cable modem or DSL modem that is normally intended for use by a single computer . This chap[...]

NETGEAR Wireless Router Setup Manua l 2-2 Getting to Kn ow Your NETGEAR Wireless Router December 2004 The Front Pane l The front panel of the wireless router includes various status lights. Y ou can use the status lights to verify connec tions . The Rear Panel The rear panel of the WGM1 24 rout er contains the items listed below . • AC power adap[...]

Connecting the Router to the Internet 3-1 December 2004 Chapter 3 Connecting the Router to the Internet This chapter describes how to set up the router on your local area network (LAN) and connect to the Internet. Y ou will find out how to configur e your wireless router for Internet access. Follow these instructions to set up your router . Prep ar[...]

NETGEAR Wireless Router Setup Manua l 3-2 Connecting the Router to the Internet December 2004 T roubleshooting Tip s Here are some tips for correctin g simple problems you may have. Be sure to restart your network in this sequence: 1) T urn off the modem, wireless router, and compu ter; 2) T urn on the modem, wait two minutes; 3) T urn on the wirel[...]

NETGEAR Wireless Router Setup Manual Connecting th e Rou te r to the Internet 3-3 December 2004 How to Manually Configure Y our Internet Connection Y ou can manually configure your router using the menu below , or you can allow the Setup W izard to determine your config uration as described in the previous section. Figure 3-1: Browser-based c onfig[...]

NETGEAR Wireless Router Setup Manua l 3-4 Connecting the Router to the Internet December 2004 b. Internet IP Address: If your ISP has assigned you a perma nent, fi xed (static) IP address for your computer , select “Use static IP address”. Enter the IP ad dres s that your ISP assigned. Also enter the netmask and the Gateway IP address. The Gate[...]

NETGEAR Wireless Router Setup Manual Connecting th e Rou te r to the Internet 3-5 December 2004 Figure 3-2: Basic Settings ISP lis t Note: Not all ISPs are listed here. The ones on this list have special requirements. b. The screen will change accordi ng to the ISP settings requirements of the ISP you select. c. Fill in the parameters for yo ur Int[...]

NETGEAR Wireless Router Setup Manua l 3-6 Connecting the Router to the Internet December 2004[...]

Optimizing Wireless Connectivity and Security 4-1 December 2004 Chapter 4 Optimizing Wireless Connectivity and Security This chapter describes how to configure the wireless features of your wireless router. In planning your wireless network, you should consider the le vel of security required. Y ou should also select the physical placement o f your[...]

NETGEAR Wireless Router Setup Manua l 4-2 Optimizing Wireless Connectivity and Security December 2004 Implement Appropriate Wireless Security Unlike wired network data, your wireless data transmissions can be rece ived well beyo nd your walls by anyone with a compatib le adapter . For this reason, use the security features of your wireless equipmen[...]

NETGEAR Wireless Router Setup Manual Optimizing Wireless Connectivity and Security 4-3 December 2004 Underst anding Wireless Settings T o configure the W ireless settings of your firewall, click the W irel ess link in the main menu of the browser interface. • Name (SSID). The SSID is also known as the wireless network name. Enter a value of up to[...]

NETGEAR Wireless Router Setup Manua l 4-4 Optimizing Wireless Connectivity and Security December 2004 T able 4-1. Basic W ireless Securit y Options Field Description Automatic No wireless secu rity . WEP WEP offers the following options: • Open System With Open Network Authe nti cation and 64- or 128-bi t WEP Data Encryption, the WGM124 does perf[...]

NETGEAR Wireless Router Setup Manual Optimizing Wireless Connectivity and Security 4-5 December 2004 Information to Gather Before Changing Basic Wireless Settings Before customizing your wireless settings, print th is form and record the following information. • Wir eless Ne twork Name (SSID) : ______________ _________ _______ The SSID, identifie[...]

NETGEAR Wireless Router Setup Manua l 4-6 Optimizing Wireless Connectivity and Security December 2004 Default Factory Settings When you first receive your WGM124, the d efault factory settings are show n below . Y ou can restore these defaults with the Factory Default R estore button on the rear panel. After you install the wireless router, use the[...]

Doing Basic Router Housekeeping 5-1 December 2004 Chapter 5 Doing Basic Router Housekeeping This chapter de scribes how to use some of the ma intena nce features of your Pre-N W irele ss Router WGM124. These features can be found by clicking on the Maintenance head ing in the Main Menu of the browser interface. Other maintenance featur es not prese[...]

NETGEAR Wireless Router Setup Manua l 5-2 Doing Basic R outer Housekeeping December 2004 T o change the password, first en ter the old password, then enter the new password twice. Click Apply . Configuration File Management The configuration settings of the wireless router are stored wit hin the wireless router in a configuration file. This file ca[...]

NETGEAR Wireless Router Setup Manual Doing Basic Rout er Housek eeping 5-3 December 2004 T o restore your settings from a saved configuration file, enter the full path to the file on your PC or click the Browse button to browse to the file. When you ha ve located it, click the Restore button to send the file to the wireless router. The wirel ess ro[...]

NETGEAR Wireless Router Setup Manua l 5-4 Doing Basic R outer Housekeeping December 2004 Figure 5-3: Router Upgrade menu T o upload new firmware: 1. Download and unzip the new so ftware file from NETGEAR. 2. In the Router Upgrade menu, click the Brow se button and browse to the location of the upgrade file 3. Click Upload. Note: When uploading soft[...]

Troubleshooting Common Prob lems 6-1 December 2004 Chapter 6 T roubleshooting Common Problems This chapter gives informatio n about troubleshooting your Pr e-N W ireless Router WGM124. After each problem description, instructions ar e provided to help yo u diagnose and sol ve the problem. Basic Functioning After you turn on power to the router , th[...]

NETGEAR Wireless Router Setup Manua l 6-2 Troubleshoo tin g Co mmo n Pro ble m s December 20 04 Light s Never T urn Off When the router is turned on, th e lights turns on for about 10 secon ds and then turn of f. If all the lights stay on, there is a fault within the router . If all lights are still on one minute after power up: • Cycle the power[...]

NETGEAR Wireless Router Setup Manual Troubleshooting Co mmon Problems 6-3 December 20 04 • Make sure your computer ’ s IP addre ss is on th e same subnet as the router . If you are using the default addressing schemes, your computer ’ s addres s sho uld be in the range of 192.168.1.2 to 192.168.1.254. Refer to “V erifying TCP/IP Properties?[...]

NETGEAR Wireless Router Setup Manua l 6-4 Troubleshoo tin g Co mmo n Pro ble m s December 20 04 3. Under the Maintenance heading, select Router Status 4. Check that an IP address is shown for the W AN Port If 0.0.0.0 is shown, your router has no t obtained an IP address from your ISP . If your router is unable to obtain an IP address from the ISP ,[...]

NETGEAR Wireless Router Setup Manual Troubleshooting Co mmon Problems 6-5 December 20 04 A DNS server is a host on the Internet that translates Interne t names (such as www addresses) to numeric IP addresses. T ypically your ISP will provide the addresses of one or two DNS servers for your use. If you ent ered a DNS address during the router’ s c[...]

NETGEAR Wireless Router Setup Manua l 6-6 Troubleshoo tin g Co mmo n Pro ble m s December 20 04 If the path is not functioning correctly , you could ha ve one of the following problems: • W rong ph ysical connections — Make sure the LAN port LED is on. If the LED is of f, follow the instructions in “LAN or Internet (W AN) Port Lights Not On ?[...]

NETGEAR Wireless Router Setup Manual Troubleshooting Co mmon Problems 6-7 December 20 04 — Y our ISP could be rejecting the Ethernet MAC addresses of all but one of your computers. Many broadband ISPs restrict acce ss by only allowing traffic from the MAC address of your broadband modem, but some ISPs additionally restrict access to the MAC addre[...]

NETGEAR Wireless Router Setup Manua l 6-8 Troubleshoo tin g Co mmo n Pro ble m s December 20 04[...]

Technical Specifications A-1 December 2004 Appendix A T echnical S pecifications This appendix provides technical specifications for the Pre-N W ireless Router WGM124. Network Protocol and Standards Compatibility Data and Routing Protocols: TCP/IP , RIP-1, RIP-2, DHCP PPP over Ethernet (PPPoE) Power Adapter North America: 120V , 60 Hz, input United[...]

NETGEAR Wireless Router Setup Manua l A-2 Technical Specifications December 2004 Wireless Radio Data Rates 1, 2, 5.5, 6, 9, 12, 18, 24, 36, 48, and 54 Mbps Auto Rate Sensing, and pre-N up to 108 Mbps Frequency 2.4-5Gh z Data Encoding: 802.1 1b/g2.4GHz to 2.5GHz CCK and OFDM Modulatio n Maximum Computers Per Wireless Network: Limited by the amount o[...]

Network, Routing, and Firewall Basics B-1 December 2004 Appendix B Network, Routing, and Firewall Basics This chapter provides an overview of IP networks, routing, an d networking. Related Publications As you read this document, you may be dire cte d to various RFC documents for further information. An RFC is a Request For Comment (RFC) published b[...]

NETGEAR Wireless Router Setup Manua l B-2 Network, Routing, and Firewall Basi cs December 2004 Routing Information Protocol One of the protocol s used b y a rout er to b uild an d maintain a picture of the network is the Routing Information Protocol (RIP). Us ing RIP , routers periodically update one another an d check for changes to add to the rou[...]

NETGEAR Wireless Router Setup Manual Network, Routing, and Firewall Basics B-3 December 2004 Figure B-1: Three Main Address Classes The five address classes are: • Class A Class A addresses can have up to 16,777,2 14 hosts on a single net work. They use an eigh t-bit network number and a 24-bit node number . Class A addresses are in this range: 1[...]

NETGEAR Wireless Router Setup Manua l B-4 Network, Routing, and Firewall Basi cs December 2004 This addressing structure allows IP addresses to uniquely identify each phys ical network and each node on each ph ysical network . For each unique value of the network port ion of the address, the base address of the range (host address of all zeros) is [...]

NETGEAR Wireless Router Setup Manual Network, Routing, and Firewall Basics B-5 December 2004 Subnet addressing al lows us to split one IP network ad dress into smaller multiple physical networks known as sub networks. Some of the node numbers are used as a su bnet number instead. A Class B address gives us 16 bits of node numbers translating to 64,[...]

NETGEAR Wireless Router Setup Manua l B-6 Network, Routing, and Firewall Basi cs December 2004 The following table lists the additional subnet mask bits in dotted-decimal notation. T o use the table, write down the original class netmask and replace the 0 value octets with the dotted-decimal value of the additional subnet b its. For example, to par[...]

NETGEAR Wireless Router Setup Manual Network, Routing, and Firewall Basics B-7 December 2004 • So that hosts recognize local IP broadcast packets When a device broadcasts to its segment neighb ors, it uses a destination address of the local network address with all ones for the host address. In order for this schem e to work, all de vices on the [...]

NETGEAR Wireless Router Setup Manua l B-8 Network, Routing, and Firewall Basi cs December 2004 The following figure illustrates a single IP address operation. Figure B-3: Single IP Address Operation Using NA T This scheme offers t he additional benefit of firewall -like protection because the internal LAN addresses are not available to the Internet[...]

NETGEAR Wireless Router Setup Manual Network, Routing, and Firewall Basics B-9 December 2004 If a device sends data to another station on the network and the destination MAC address is not yet recorded, ARP is used. An ARP request is broadcast onto the network. All stations on the network receive and read the reque st. The destination IP addr ess f[...]

NETGEAR Wireless Router Setup Manua l B-10 Network, Routing, and Firewall Ba sics December 2004 IP Configuration by DHCP When an IP-based local area network is installed, each computer must be configured with an IP address. If the computers need to access the Inte rnet, they should also be configured with a gateway address and one or more DNS serve[...]

NETGEAR Wireless Router Setup Manual Network, Routing, a nd Firewall Basics B-11 December 2004 S t ateful Pac ket Inspection Unlike simple Internet sharing rout ers, a firewall uses a process ca ll ed stateful packet inspection to ensure secure firewall filtering to protect your network from attacks and intrusions. Since user-level applications suc[...]

NETGEAR Wireless Router Setup Manua l B-12 Network, Routing, and Firewall Ba sics December 2004 Category 5 Cable Quality Category 5 distributed cable that me ets ANSI/EIA/ TIA-568-A building wiring stan dards can be a maximum of 328 feet (ft.) or 10 0 meters (m) in length, divided as follows: 20 ft. (6 m) between the hu b and the patch panel (if u [...]

NETGEAR Wireless Router Setup Manual Network, Routing, a nd Firewall Basics B-13 December 2004 Inside T wisted Pair Cables For two devices to communicate, th e transmitter of each device must be connected to the receiver of the other device. The cro sso ver function is usually implemented inte rnally as part of the circuitry in the device. Comp ut [...]

NETGEAR Wireless Router Setup Manua l B-14 Network, Routing, and Firewall Ba sics December 2004 Figure B-6: Category 5 UTP Cable with Male RJ-45 Plug at Each End Note : Flat “silver satin” tele phone cable may have the same RJ-45 pl ug. However , using tele phone cable results in excessive collisio ns, causing the attached port to be partitione[...]

NETGEAR Wireless Router Setup Manual Network, Routing, a nd Firewall Basics B-15 December 2004 The wireless router incorporates Auto Uplink TM technology (also called MDI/MDIX). Each LOCAL Ethernet port will automati cally sense whether the Ethernet cable pl ugged into the port should have a normal con nection (e.g. co nnecting to a computer) or an[...]

NETGEAR Wireless Router Setup Manua l B-16 Network, Routing, and Firewall Ba sics December 2004[...]

Preparing Your Netwo rk C-1 December 2004 Appendix C Prep aring Y our Network This appendix describes how to prepare your n etw ork to connect to the In ternet through the Pre-N W ireless Router WGM124 and how to verify the readines s of broadband Internet service from an Internet service provider (ISP). What Y ou Need T o Use a Rout er with a Broa[...]

NETGEAR Wireless Router Setup Manua l C-2 Preparing Yo ur Network December 2004 For the initial setup of your rout er , you will need to connect a computer to the router . This computer has to be set to automatically get it s TCP/IP configuration from the router via DHCP . Note: For help with DHCP configuration, pleas e use the W indows TCP/IP Conf[...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-3 December 2004 Record Y our Internet Co nnection Information Print this page. Fill in the configuration parameters from your Internet Service Provider (ISP). ISP Login Name: The login name and password are case sensitive and must be ente red exactly as given by your ISP . Some ISPs use[...]

NETGEAR Wireless Router Setup Manua l C-4 Preparing Yo ur Network December 2004 Most operating systems include the software comp onents yo u n eed for networking with TCP/IP: •W i n d o w s ® 95 or later includes the software compon ents for establishing a TCP/IP network. • W indows 3.1 does not include a TCP/IP comp onent. Y ou need to purcha[...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-5 December 2004 2. Double-click the Network icon. The Network window o pens, which disp lays a list of installed components: Y ou must have an Ethernet adapter , the TCP/IP protocol, and Client for Microsoft Networks. If you need to install a ne w adapter , follow these steps: a. Click [...]

NETGEAR Wireless Router Setup Manua l C-6 Preparing Yo ur Network December 2004 c. Select Microsoft. d. Select TCP/IP , and then click OK. If you need Client for Micro soft Networks: a. Click the Add button. b. Select Client, and then click Ad d. c. Select Microsoft. d. Select Client for Microsoft Networks, and then click OK. 3. Restart your PC for[...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-7 December 2004 Locate your Network Neighborhood icon. • If the Network Neighbor hood icon is on the W indows desktop, position your mouse pointer over i t and right-click your mouse button. • If the icon is not on the desktop, • Click St a r t on the task bar located at the botto[...]

NETGEAR Wireless Router Setup Manua l C-8 Preparing Yo ur Network December 2004 Selecting Windows’ In ternet Access Method 1. On the W indows taskbar , click the Start button, point to Settings, and th en click Control Panel. 2. Double-click the Internet Options icon. 3. Select “I want to set up my Int ernet connectio n manually” or “I want[...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-9 December 2004 2. Ty p e winipcfg , and then click OK. The IP Configuration window opens, which lists (a mong other things), your IP address, subnet mask, and default gateway . 3. From the drop-down box, select your Ethernet adapter . The window is updated to show your settings, which [...]

NETGEAR Wireless Router Setup Manua l C-10 Preparing Your Network December 2004 DHCP Configuration of TCP/IP in Windows XP , 2000, or NT4 Y ou will find there are many similarities in th e procedures for different W i ndows systems whe n using DHCP to configure TCP/IP . The following steps will walk you through the configura tion process for each o[...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-11 December 2004 • Now you should be at the Local Area Network Connection S tatus window . This box displays the conn ection status, duration, speed, and activity statistics. • Administrator logon access rights are needed to use this window . • Click the Properties button to view [...]

NETGEAR Wireless Router Setup Manua l C-12 Preparing Your Network December 2004 DHCP Configuration of TC P/IP in Windows 2000 Once again, after you have installed the network card, TCP/IP for W indows 2000 is con figured. TCP/IP should be added by de fault and set to DHCP without your having to configure it. However , if there are problems , follow[...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-13 December 2004 • Click on the My Network Places icon on the W indows desktop. This will bring up a window called Network and Dial-up Connectio ns. • Right click on Local Ar ea Connection and select Properties . •T h e Local Area Connection Pr operties dialog box appears. • V e[...]

NETGEAR Wireless Router Setup Manua l C-14 Preparing Your Network December 2004 • W ith Internet Protocol (TCP/IP) selected, click on Properties to open the Internet Protocol (TCP/IP) Propert ies dialogue box. • V erify that • Obtain an IP address automatically is selected. • Obtain DNS server address automatically is selected. • Click OK[...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-15 December 2004 DHCP Configuration of TCP/IP in Windows NT4 Once you have installed the network card, you need to configure the TCP /IP environment for W indows NT 4.0. Follow this procedure to configure TCP/IP with DHCP in W indows NT 4.0. • Choose Settings from the Start Menu, and [...]

NETGEAR Wireless Router Setup Manua l C-16 Preparing Your Network December 2004 • Highlight the TCP/IP Pr otocol in the Network Protocols box, and click on the Properties button.[...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-17 December 2004 V erifying TCP/IP Properties fo r Windows XP , 2000, and NT4 T o check your PC’ s TCP/IP configuration: 1. On the W indows taskbar , click the Start button, and then click Run. The Run window opens. 2. Ty p e cmd and then click OK. A command window opens 3. Ty p e ipc[...]

NETGEAR Wireless Router Setup Manua l C-18 Preparing Your Network December 2004 • The default gateway i s 192.168.1.1 4. Ty p e exit Configuring the Macintos h for TCP/IP Networking Beginning with Macintosh Operating System 7 , TCP/ IP is already installed on the Macint osh. On each networked Macintosh, you will need to configure TCP/ IP to use D[...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-19 December 2004 2. If not already selected, select Built- in Ethernet in the Configure list. 3. If not already selected, Select Using DHCP in the TCP/IP tab. 4. Click Save. V erifying TCP/IP Properties for Macintosh Computers After your Macintosh is configured and has rebo oted, you ca[...]

NETGEAR Wireless Router Setup Manua l C-20 Preparing Your Network December 2004 V erifying the Readiness of Y our Internet Account For broadband access to the Internet, you need to contract with an Internet service provider (ISP) for a single-user Internet access account using a cable modem or DSL mode m. This modem must be a separate physical box [...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-21 December 2004 • An IP address and subnet mask • A gateway IP address, which is the address of the ISP’ s router • One or more domain name server (DNS) IP addresses • Host name and domain suf fix For example, your account’ s full server names may look like this: mail.xxx.y[...]

NETGEAR Wireless Router Setup Manua l C-22 Preparing Your Network December 2004 If an IP address appears under Installed Gatewa ys, write down the address. This is the ISP’ s gateway address. Select the address and then click Remove to remove the gateway address. 6. Select the DNS Configuration tab. If any DNS server addresses are shown, write do[...]

NETGEAR Wireless Router Setup Manual Preparing Your Netwo rk C-23 December 2004 Rest arting the Network Once you’ve set up yo ur computers to work with the firewall, you must reset the network for the devices to be able to communicat e correctly . Re start any computer that is connected to the firewall. After configuring all of your computers for[...]

NETGEAR Wireless Router Setup Manua l C-24 Preparing Your Network December 2004[...]

Wireless Networking Basics D-1 December 2004 Appendix D Wireless Networking Basics Wireless Networking Overview The wireless router conforms to the Institute of Electrical and Electronics Engineers (IEEE) 802.1 1g standard for wireless LANs (WLANs). On an 802.1 1 wireless link, data is encoded using direct-sequence spre ad-spectrum (DSSS) technolog[...]

NETGEAR Wireless Router Setup Manua l D-2 Wireless Networking Basics December 2004 Ad Hoc Mode (Peer- to-Peer Workgroup) In an ad hoc network, computers are brought together as needed; thus, there is no structure or fixed points to the network - each node can g enerally communicate with any ot her node. There is no access point involved in this con[...]

NETGEAR Wireless Router Setup Manual Wireless Networking Basics D-3 December 2004 The radio frequency channels used are listed in Ta b l e D - 1 : Note: The av ailable channe ls sup ported by the wireless products in various countries are dif ferent. The preferred channel separation betw een the chan nels in neighboring wireless networks is 25 MHz [...]

NETGEAR Wireless Router Setup Manua l D-4 Wireless Networking Basics December 2004 WEP Wireless Security The absence of a ph ysical connection between no des makes the wireless links vulnerable to eavesdropping and information theft. T o provide a certain level of security , the IEEE 802.1 1 standard has defined two ty pes of authentication methods[...]

NETGEAR Wireless Router Setup Manual Wireless Networking Basics D-5 December 2004 • Shared Key Authentication requires that the station and the access point have the same WEP Key to authenticate. These two authentication procedures are described below . WEP Open System Authentication This process is illustrated in below . Figure D-1: 802.1 1 open[...]

NETGEAR Wireless Router Setup Manua l D-6 Wireless Networking Basics December 2004 WEP Shared Key Authentication This process is illustrated in below . Figure D-2: 802.1 1 shared key authentication The following steps occur when two de vices use Shared Key Authentication: 1. The station sends an authentica tion request to the access point. 2. The a[...]

NETGEAR Wireless Router Setup Manual Wireless Networking Basics D-7 December 2004 Key Size and Configuration The IEEE 802.1 1 standard su pports two types of WEP en cryption: 40-bit and 128-bit. The 64-bit WEP data encryption meth od, allows for a five -character (40-bit) input. Additionally , 24 factory-set bits are added to the forty-bit input to[...]

NETGEAR Wireless Router Setup Manua l D-8 Wireless Networking Basics December 2004 How to Use WEP Parameters W ired Equivalent Privacy (WEP) data encryption is used when the wireless devices are configure d to operate in Shared Key authentication mode. Th ere are two shared key methods implemented in most commercially availa ble products, 64-bit an[...]

NETGEAR Wireless Router Setup Manual Wireless Networking Basics D-9 December 2004 • Enhanced data privacy • Robust key management • Data origin authentication • Data integrity protection The W i-Fi Alliance is now perform ing interoperability certificatio n testing on W i-Fi Protected Access products. Starting August of 2003, all new Wi-Fi [...]

NETGEAR Wireless Router Setup Manua l D-10 Wireless Networking B asics December 2004 How Does WP A Compare to IEEE 802.1 1i? WP A will be forward compatible with the IEEE 802.1 1i security specification currently under development. WP A is a subset of the current 8 02.1 1i draft and uses certain pieces of the 802.1 1i draft that are ready to bring [...]

NETGEAR Wireless Router Setup Manual Wireless Networking Basics D-11 December 2004 The primary information conveyed in the Beacon frames is the authentication method and the cipher suite. Possible authentication methods in clude 802.1X an d Pr e-s h are d ke y . Pre-shared key is an authentication method that uses a st atically configured pas s phr[...]

NETGEAR Wireless Router Setup Manua l D-12 Wireless Networking B asics December 2004 WP A Authentication: Enterprise-level User Authentication via 802.1x/EAP and RADIUS Figure D-3: WP A Overview IEEE 802.1x offers an ef fective framework for authenticating and controlling user traffic to a protected network, as well as providin g a vehicle for dyna[...]

NETGEAR Wireless Router Setup Manual Wireless Networking Basics D-13 December 2004 Figure D-4: 802.1x A uthenticat ion Sequenc e The AP sends Beacon Frames with WP A informatio n element to the stations in the service set. Information ele ments inclu de the required authentication method (8 02.1x or Pre-shared key) and the preferred cipher suite (W[...]

NETGEAR Wireless Router Setup Manua l D-14 Wireless Networking B asics December 2004 3. The client sends an EAP-response packet containing the identity to the authentication server . The access point responds by enabling a port fo r passing only EAP packets from the client to an authentication server located on the wired si de of the access point. [...]

NETGEAR Wireless Router Setup Manual Wireless Networking Basics D-15 December 2004 T emporal Key Integrity Protocol (TKIP) WP A uses TKIP to provide important data encr y ption enhancements including a per -packet key mixing function, a message integrity check (M IC) named Michael , an extended initialization vector (IV) with sequencing rules, and [...]

NETGEAR Wireless Router Setup Manua l D-16 Wireless Networking B asics December 2004 Is WP A Perfect? WP A is not without its vulnerabiliti es. Specifically , it is susceptible to denial of service (DoS) attacks. If the access point receives two da ta pa ckets that fail the Me ssage Integrity Code (MIC) check within 60 seconds of each ot her then t[...]

NETGEAR Wireless Router Setup Manual Wireless Networking Basics D-17 December 2004 • The new WP A information element T o advertise their support of WP A, wireless APs send the beacon frame with a new 802.11 WP A information element that contains the wire less AP's security configu rati on (encryption algorithms and wireless security configu[...]

NETGEAR Wireless Router Setup Manua l D-18 Wireless Networking B asics December 2004 Changes to Wireless Client Programs W ireless client programs must be updated to pe rmit the configuration of WP A authentication (and preshared key) and the n ew WP A encryption algorithms (TKIP and the optional AES component). T o obtain the Microsoft WP A client[...]

December 2004 Glossary 1 Glossary Use the list below to find definitions for technical terms used in this manual. List of Glossary T erms 802.1 1 b IEEE specification for wireless networ king at 1 1 Mbps using direct-sequence spread-spectrum (DSSS) technology and operating in the unlicensed radio spectrum at 2.5GHz. 802.1 1 g A soon to be ratified [...]

NETGEAR Wireless Router Setup Manua l 2 Glossary December 2004 Domain Name A descriptive name for an address or gro up of addresses on the Internet. Dom ain names are of the form of a registered entity name plus one of a nu mber of predefined top level suffixes such as .com, .edu, .uk, etc. For example, in the address mail.NETGEAR.com, mail is a se[...]

NETGEAR Wireless Router Setup Manual Glossary 3 December 2004 MAC address The Media Access Control address is a unique 48-bit hardware address assigned to every network interface card. Usually written in the form 01:23:45 :67: 89:ab. Mbp s Megabits per second. Point-to-Point Protocol PPP . A protocol allowi ng a computer u sing TCP/IP to connect di[...]

NETGEAR Wireless Router Setup Manua l 4 Glossary December 2004 Subnetting enables the network admi nistrator to further di vide the host part of the address into two or more subnets. In this case, a part of the host address is rese rved to identify the particular subnet. This is easier to see if we show the IP address in binary format . The full ad[...]

Index 1 Numerics 802.1 1b D-1 A Account Name 3-3 Address Resolution Protocol B-8 ad-hoc mode D-2 Auto MDI/MDI-X B-15 Auto Uplink B-15 B backup configuration 5-2 BSSID D-2 C Cabling B-1 1 Cat5 cable B-12, C-1, G-1 configuration backup 5-2 erasing 5-3 restore 5-1 crossover cable 6-2, B-14, B-15 customer support 1-iii D denial of service attack B-11 D[...]

2 Index auto-generated 6-3 private B-7 translating B-9 IP configuration by DHCP B-10 IP networking for Macintosh C-18 for W indows C-4, C-9 L LEDs troubleshooting 6-2 M MAC address 6-7, B-8 spoofing 3-4, 6-4 Macintosh C-21 configuring for IP networking C-18 DHCP Client ID C-18 Obtaining ISP Configuration Information C-22 masquerading C-20 MDI/MDI-X[...]

Index 3 U Uplink switch B-14 USB C-20 W WEP D-8 Wi - Fi D - 1 , D - 4 W indows, configuring for IP routing C-4, C-9 winipcfg utility C-8 W inPOET C-20 W ired Equivalent Privacy . See WEP Wi r el e s s A c c es s C - 3 W ireless Ethernet D-1 W ireless Performance 4-1 W ireless Range Guidelines 4-1 W ireless Security 4-2 W orld W ide W eb 1-iii WP A-[...]