Nortel Networks WAG54G manual What is the ISM band?, What is Spread Spectrum?, What is WEP?

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Wireless-G ADSL Gateway

What is the ISM band?

The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the ISM (Industrial, Scientific and Medical) band. Spectrum in the vicinity of 2.4 GHz, in particular, is being made available worldwide. This presents a truly revolutionary opportunity to place convenient high-speed wireless capabilities in the hands of users around the globe.

What is Spread Spectrum?

Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable, secure, mission-critical communications systems. It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other words, more bandwidth is consumed than in the case of narrowband transmission, but the trade-off produces a signal that is, in effect, louder and thus easier to detect, provided that the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to the right frequency, a spread-spectrum signal looks like background noise. There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS).

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.

Will the information be intercepted while it is being transmitted through the air?

WLAN features two-fold protection in security. On the hardware side, as with Direct Sequence Spread Spectrum technology, it has the inherent security feature of scrambling. On the software side, WLAN offers the encryption function (WEP) to enhance security and access control.

What is WEP?

WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 64-bit or 128-bit shared key algorithm, as described in the IEEE 802.11 standard.

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.

Appendix A: Troubleshooting

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Frequently Asked Questions

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Contents 802 GHz .11g Wireless- G Copyright and Trademarks How to Use this GuideWord definition Table of Contents Wireless-G Adsl Gateway Ports and Reset Button on Side Panel Network24 Advanced Wireless Settings Figure C-2 MAC Address/Adapter Address Introduction WelcomeWhat’s in this User Guide? Wireless-G Adsl Gateway IP Addresses Planning Your NetworkGateway’s Functions What’s an IP Address?Dhcp Dynamic Host Configuration Protocol Servers What is a VPN?Dynamic IP Addresses Why do I need a VPN? VPN Gateway to VPN GatewayWireless-G Adsl Gateway Getting to Know the Wireless-G Adsl Gateway Ports and Reset Button on Side PanelLEDs and Power Button on Side Panel PowerBottom Panel Bottom Panel with Stand Closed PositionConnecting the Wireless-G Adsl Gateway OverviewWired Connection to a Computer Connect the Adsl LineWireless Connection to a Computer Wireless Configuring the Wireless-G Adsl GatewaySetup SecurityApplications & Gaming Access RestrictionAdministration StatusBasic Setup Tab How to Access the Web-based UtilitySetup Tab Internet SetupRFC 1483 Bridged Dynamic IP Static IPRFC 1483 Routed RFC 1483 RoutedIPoA RFC 2516 PPPoEBridged Mode Only RFC 2364 PPPoAOptional Settings required by some ISPs Network SetupConfiguring the Wireless-G Adsl Gateway Setup Tab DynDNS.org Ddns TabTZO.com Advanced Routing Tab Advanced Routing15 Routing Table Wireless Security Tab Wireless TabBasic Wireless Settings Tab Wireless NetworkWPA Pre-Shared Key WPA RadiusWireless Network Access Wireless Access TabWireless Client MAC List screen Advanced Wireless Settings Tab Advanced WirelessFirewall Security TabFirewall Tab Additional FiltersVPN Passthrough VPN TabIPSec VPN Tunnel 28 VPN Settings Summary 29 Advanced IPSec Settings Access Restriction Tab Internet Access Tab33 List of PCs Single Port Forwarding Tab Applications & Gaming TabSingle Port Forwarding Port Range Forwarding Tab Port Triggering TabQoS DMZ TabQoS Tab PVC QoS PriorityEdit list of QoS Settings 40 Edit List of QoS SettingsGateway Access Administration TabManagement Tab Snmp UPnPIGMP-Snooping IGMP-ProxyTelnet Reporting Reporting TabEmail Alerts Backup Configuration Diagnostics TabBackup&Restore Tab Restore ConfigurationReboot Tab Factory Defaults TabFirmware Upgrade Tab Upgrade from LANGateway Information Status TabGateway Tab Internet ConnectionLocal Network Tab 51 Local Network54 Wireless DSL Status DSL Connection TabPVC Connection Common Problems and Solutions Appendix a TroubleshootingNeed to set a static IP address on a computer Want to test my Internet connection Wireless-G Adsl Gateway Wireless-G Adsl Gateway TCP UDP Can’t get the Internet game, server, or application to work Firmware upgrade failed, and/or the Power LED is flashing To start over, I need to set the Gateway to factory defaultNeed to upgrade the firmware My DSL service’s PPPoE is always disconnectingPower LED flashes continuously Is IPSec Passthrough supported by the Gateway? Frequently Asked QuestionsWhere is the Gateway installed on the network? Does the Gateway support IPX or AppleTalk?What is Network Address Translation and what is it used for? Does the Gateway support ICQ send file?What is DMZ Hosting? Is the Gateway cross-platform compatible? What are the advanced features of the Gateway?What is the Ieee 802.11g standard? How many ports can be simultaneously forwarded?What is infrastructure mode? What Ieee 802.11b and 802.11g features are supported?What is ad-hoc mode? What is roaming?What is DSSS? What is FHSS? And what are their differences? What is the ISM band?What is Spread Spectrum? What is WEP?How do I resolve issues with signal loss? How do I reset the Gateway?Have excellent signal strength, but I cannot see my network Security Precautions Appendix B Wireless SecuritySecurity Threats Facing Wireless Networks Appendix B Wireless Security Wireless-G Adsl Gateway Figure C-1 IP Configuration Screen Windows 98 or Me InstructionsWindows 2000 or XP Instructions Figure C-3 MAC Address/Physical AddressFigure D-1 Firmware Upgrade Appendix D Upgrading FirmwareAppendix E Glossary Wireless-G Adsl Gateway Wireless-G Adsl Gateway Wireless-G Adsl Gateway Wireless-G Adsl Gateway Appendix F Specifications Storage Humidity Appendix G Regulatory Information Dual-Band Wireless Access Point Dual-Band Wireless Access Point Wireless-G Adsl Gateway Wireless-G Adsl Gateway Applicable Power Levels in France Location Frequency Range MHz Power EirpOpen the Wireless Network Connection window Wireless-G Adsl Gateway Wireless-G Adsl Gateway Wireless-G Adsl Gateway Wireless-G Adsl Gateway Wireless-G Adsl Gateway Wireless-G Adsl Gateway Appendix H Warranty Information Appendix I Contact Information Europe Mail AddressOutside of Europe Mail Address

WAG54G specifications

Nortel Networks WAG54G is a robust and versatile wireless access gateway that has made significant strides in providing seamless connectivity for both home and small business environments. Designed with the intention of integrating both wired and wireless networking, this device bridges the gap between traditional Ethernet connections and the burgeoning needs of modern wireless communication.

One of the key features of the WAG54G is its ability to deliver high-speed Internet access through multiple protocols, including ADSL and DSL. This flexibility allows users to enjoy fast Internet speeds while simultaneously managing their internal network. The device is equipped with advanced Quality of Service (QoS) features that prioritize traffic, ensuring that critical applications receive the necessary bandwidth for optimal performance.

The WAG54G is powered by advanced 802.11g wireless technology, which offers wireless data rates of up to 54 Mbps. This enables users to stream videos, make VoIP calls, and engage in online gaming without significant lag, enhancing the overall user experience. The device supports a range of wireless security protocols, including WEP, WPA, and WPA2 encryption, ensuring that user data remains secure from potential threats and unauthorized access.

Another noteworthy characteristic of the WAG54G is its straightforward setup process. The unit comes with a user-friendly web interface that simplifies configuration, allowing users to customize their network settings with ease. The WAG54G also features multiple Ethernet ports for wired connections, making it an ideal solution for homes and offices with multiple devices requiring stable Internet connectivity.

In addition to its core functionalities, the WAG54G supports features such as network address translation (NAT) and a built-in firewall that enhances security while allowing multiple devices to share a single Internet connection. The device also incorporates features like DHCP server capabilities and UPnP support, streamlining network management.

Overall, Nortel Networks WAG54G delivers a compelling mix of performance, security, and manageability. Its combination of wired and wireless capabilities, alongside robust security measures, makes it suitable for various networking needs in today’s digital landscape. Users can count on the WAG54G to provide a reliable and efficient solution that supports the demands of modern Internet usage.
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