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ZyXEL Communications 1 Wireless LAN Network, 2.1 Wireless LAN Overview, 2.2 Wireless LAN Security Overview, 2.1.1 SSID, 2.1.2 Channel, 2.1.3 Transmission Rate (Tx Rate), 1 Mbps

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ZyXEL G-220 v2 User’s Guide

CHAPTER 2

Wireless LAN Network

This chapter provides background information on wireless LAN network.

2.1 Wireless LAN Overview

This section describes the wireless LAN network terms and applications.

2.1.1 SSID

The SSID (Service Set Identity) is a unique name shared among all wireless devices in a wireless network. Wireless devices must have the same SSID to communicate with each other.

2.1.2 Channel

A radio frequency used by a wireless device is called a channel.

2.1.3 Transmission Rate (Tx Rate)

The ZyXEL G-220 v2 provides various transmission (data) rate options for you to select. Options include Fully Auto, 1 Mbps, 2 Mbps, 5.5 Mbps, 6 Mbps, 9 Mbps, 11 Mbps, 12 Mbps, 18 Mbps, 24 Mbps, 36 Mbps, 48 Mbps and 54 Mbps. In most networking scenarios, the factory default Fully Auto setting proves the most efficient. This setting allows your ZyXEL G-220 v2 to operate at the maximum transmission (data) rate. When the communication quality drops below a certain level, the ZyXEL G-220 v2 automatically switches to a lower transmission (data) rate. Transmission at lower data speeds is usually more reliable. However, when the communication quality improves again, the ZyXEL G-220 v2 gradually increases the transmission (data) rate again until it reaches the highest available transmission rate. You can select any of the above options. If you wish to balance speed versus reliability, select 54 Mbps in a networking environment where you are certain that all wireless devices can communicate at the highest transmission (data) rate. 1 Mbps or 2 Mbps are used often in networking environments where the range of the wireless connection is more important than speed.

Note: With USB1.0/1.1, the ZyXEL G-220 v2 can only transmit at up to 11Mbps.

2.2 Wireless LAN Security Overview

Wireless LAN security is vital to your network to protect wireless communications.

Chapter 2 Wireless LAN Network

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Contents

User’s Guide Page Copyright Disclaimer Trademarks Federal Communications Commission (FCC) Interference Statement Notice Caution Certifications ZyXEL Limited Warranty Note Online Registration Customer Support Page Table of Contents Wireless Station Mode Configuration Maintenance Appendix A Product Specifications Appendix B Access Point Mode Setup Example Page List of Figures Page List of Tables Page Preface About This User's Guide Related Documentation User Guide Feedback Syntax Conventions Graphics Icons Key Getting Started 1.1 About Your ZyXEL G-220v2 1.1.1.1 Infrastructure 1.1.1.2 Ad-Hoc 1.1.1.3 Access Point Mode 1.2 ZyXEL G-220v2 Hardware and Utility Installation 1.3 Configuration Methods 1.4 Windows XP Users Only 1.5 Accessing the ZyXEL Utility 1.6 Connecting to a Wireless LAN 1.6.1 Site Survey Security Setting 1.7 ZyXEL G-220v2 Modes 1.8 ZyXEL Utility Screen Summary Page Wireless LAN Network 2.1 Wireless LAN Overview 2.2 Wireless LAN Security Overview 2.2.2.1 EAP Authentication 2.2.3.1 Encryption 2.2.3.2 User Authentication 2.2.5 WPA(2) with RADIUS Application Example 2.3 Encryption Type 2.4Preamble Type 2.5 Introduction to OTIST 2.5.1.1 AP 2.5.1.2 Wireless Client 2.5.3Notes on OTIST Wireless Station Mode Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Access Point Mode Page Page Page Page Page Maintenance 5.1 The About Screen 5.2 Uninstalling the ZyXEL Utility 5.3 Upgrading the ZyXEL Utility Page Page Troubleshooting 6.1 Problems Starting the ZyXEL Utility Program 6.2 Problem Connecting to an Access Point 6.3 Problem with the Link Status 6.4 Problems Communicating With Other Computers Product Specifications Page Access Point Mode Setup Example Configuring the Computer on Which You Install the ZyXEL G- 220 Sharing Enable Internet Connection Sharing for this connection Configuring the Wireless Station Computer Page Via the Wireless Network System Tray Icon Wireless Network Connection Change advanced settings Related Tasks Wireless Networks Page Via the Control Panel Page Page Activating Wireless Zero Configuration Connecting to a Wireless Network Wireless Networks Wireless Network Connection Properties Refresh network list Refresh Available networks Configure Preferred Connect Security Settings Association Authentication Authentication Properties Smart Card or other Certificate Properties Ordering the Preferred Networks Wireless Networks Move up Move down Remove Page Types of EAP Authentication PEAP (Protected EAP) LEAP Dynamic WEP Key Exchange WPA(2) User Authentication WPA(2)-PSKApplication Example WPA(2) with RADIUS Application Example Security Parameters Summary Setting up Your Computer’s IP Address Windows 95/98/Me Installing Components Protocol Microsoft manufacturers TCP/IP Configuring IP Address Obtain an IP address automatically Specify an IP address Subnet Mask Windows 2000/NT/XP Network and Dial-up Connections 3Right-click Local Area Connection and then click Properties Internet Protocol (TCP/IP) General Use the following IP Address IP address Subnet mask Default gateway Advanced Macintosh OS 8/9 2Select Ethernet built-in from the Connect via list Using DHCP Server Configure: Macintosh OS Apply Now Page Index