Linksys WRT54GP2 manual What is DSSS? What is FHSS? And what are their differences?, What is WEP?

Page 84

Wireless-G Broadband Router with 2 Phone Ports

What is DSSS? What is FHSS? And what are their differences?

Frequency-Hopping Spread-Spectrum (FHSS) uses a narrowband carrier that changes frequency in a pattern that is known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct-Sequence Spread-Spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip, the greater the probability that the original data can be recovered. Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband receivers.

What is WEP?

WEP is Wired Equivalent Privacy, a data privacy mechanism based on a shared key algorithm, as described in the

IEEE 802.11 standard.

What is WPA?

WPA is Wi-Fi Protected Access, a wireless security protocol that can be used in conjunction with a RADIUS server.

What is a MAC Address?

The Media Access Control (MAC) address is a unique number assigned by the manufacturer to any Ethernet networking device, such as a network adapter, that allows the network to identify it at the hardware level. For all practical purposes, this number is usually permanent. Unlike IP addresses, which can change every time a computer logs onto the network, the MAC address of a device stays the same, making it a valuable identifier for the network.

How do I reset the Router?

Press the Reset button on the back panel for about five seconds. This will reset the Router to its default settings.

78	Appendix A: Troubleshooting
	Frequently Asked Questions

Image 84

Contents

Wireless- G How to Use this Guide Copyright and TrademarksWord definition Table of Contents Wireless-G Broadband Router with 2 Phone Ports Wireless Security WPA Wireless SecurityWireless Security WEP Wireless Network Access32 Administration Tab Log Introduction WelcomeWhat’s in this Guide? Introduction What’s in this Guide? Wireless-G Broadband Router with 2 Phone Ports Planning Your Wireless Network Ad-Hoc versus Infrastructure ModeSsid your wireless network’s name Network TopologyNetwork Layout Back Panel Phone2Front Panel Getting to Know the Router Front Panel Wireless-G Broadband Router with 2 Phone Ports Connecting the Router OverviewConnection Instructions Connect a PCConfiguring the Router Setup WirelessSecurity Administration VoiceApplications & Gaming How to Access the Web-based Utility StatusSetup Tab Basic Setup Internet SetupInternet Connection Type Obtain an IP automaticallyStatic IP PPPoERAS for SingTel PPPoEPptp Heart Beat Signal Heart Beat SignalNetwork Setup Optional SettingsRouter IP Packet a unit of data sent over a networkNetwork Address Server Settings Dhcp Setup Tab Ddns Time SettingDynDNS.org TZO.comSetup Tab MAC Address Clone MAC CloneSetup Tab Advanced Routing 12 Setup Tab Advanced Routing13 Routing Table Entry List Wireless Tab Basic Wireless Settings Wireless Tab Wireless Security 15 Wireless Tab Wireless Security WPA Pre-Shared Key16 Wireless Tab Wireless Security WPA Radius Wireless Tab Wireless Network Access 18 Wireless Tab Wireless Network AccessWireless Tab Advanced Wireless Settings 20 Advanced Wireless SettingsWireless-G Broadband Router with 2 Phone Ports Security Tab Filter Filter IP Address RangeFilter Port Range Filter MAC AddressBlock WAN Requests Internet requestsSecurity Tab VPN Passthrough VPN PassthroughVoice Tab Applications & Gaming Tab Port Range ForwardingPort Range Forwarding Port Range26 Applications & Gaming Tab Port Triggering Applications & Gaming Tab UPnP Forwarding UPnP ForwardingForwarded Range Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Applications & Gaming Tab DMZ DMZApplications & Gaming Tab QoS Application-based QoSPort-based QoS Specific Port# fieldsVoice QoS Administration Tab Management Router PasswordLocal Router Access Remote Router AccessBackup and Restore UPnPAdministration Tab Log LogAdministration Tab Factory Defaults Administration Tab Firmware UpgradeRuns a networking device Firmware with a newer versionStatus Tab Voice InformationLine1 Status Line2 StatusStatus Tab Router 38 Status Tab RouterStatus Tab Local Network Local NetworkStatus Tab Wireless Appendix a Troubleshooting Common Problems and SolutionsFor Windows 98 and Millennium Need to set a static IP address on a PCFor Windows For Windows XPWant to test my Internet connection For Windows XP Configuring the Router for details Am not able to access the Router’s Web-based Utility Setup Need to set up a server behind my Router Application Start and End Protocol IP Address Enabled TCPCan’t get the Internet game, server, or application to work Wireless-G Broadband Router with 2 Phone Ports To start over, I need to set the Router to factory default My DSL service’s PPPoE is always disconnectingFor Microsoft Internet Explorer 5.0 or higher For Netscape 4.7 or higherWireless-G Broadband Router with 2 Phone Ports Need to use port triggering Frequently Asked Questions How do I make a phone call?Can I make calls if my Internet connection is down? Can I make calls while I’m browsing the Internet?Where is the Router installed on the network? Is IPSec Passthrough supported by the Router?Does the Router support IPX or AppleTalk? How can I block corrupted FTP downloads? Wireless-G Broadband Router with 2 Phone Ports If all else fails in the installation, what can I do? What is DMZ Hosting?Will the Router function in a Macintosh environment? Is the Router cross-platform compatible? How many ports can be simultaneously forwarded?Which modems are compatible with the Router? How can I check whether I have static or Dhcp IP addresses? What is the Ieee 802.11b standard? What is the Ieee 802.11g standard? What Ieee 802.11b features are supported? What is ad-hoc mode? What is infrastructure mode?What is roaming? What is ISM band? What is Spread Spectrum?What is DSSS? What is FHSS? And what are their differences? What is WEP?What is WPA? What is a MAC Address?How do I resolve issues with signal loss? Have excellent signal strength, but I cannot see my networkWireless-G Broadband Router with 2 Phone Ports Appendix B Wireless Security Security PrecautionsSecurity Threats Facing Wireless Networks Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Figure C-1 IP Configuration Screen Windows 98 or Me InstructionsWindows 2000 or XP Instructions For the Router’s Web-based UtilityAppendix D Windows Help Shared ResourcesNetwork Neighborhood/My Network Places Appendix D Windows Help Appendix E Glossary Appendix E Glossary Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Appendix F Specifications ModelVoice Protocol UPnP able/cert CertifiedDimensions 32 x 1.89 x H x D Warranty Year LimitedStorage Humidity Appendix G Warranty Information Limited WarrantyAppendix G Warranty Information Appendix H Regulatory Information FCC StatementSafety Notices Appendix I Contact Information Appendix I Contact Information

Related manuals

Manual 110 pages 17.19 Kb