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ZyXEL Communications G-162 2.2.4 WPA-PSKApplication Example, 2.2.5 WPA with RADIUS Application Example, Step, Step, Step, Step, Step, Step, Figure 2-6 WPA-PSKAuthentication

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ZyXEL G-162 User’s Guide

The encryption mechanisms used for WPA and WPA-PSK are the same. The only difference between the two is that WPA-PSK uses a simple common password, instead of user-specific credentials. The common- password approach makes WPA-PSK susceptible to brute-force password-guessing attacks but it’s still an improvement over WEP as it employs an easier-to-use, consistent, single, alphanumeric password.

2.2.4 WPA-PSK Application Example

A WPA-PSK application looks as follows.

Step 1. First enter identical passwords into the AP and all wireless clients. The Pre-Shared Key (PSK) must consist of between 8 and 63 ASCII characters (including spaces and symbols).

Step 2. The AP checks each client’s password and (only) allows it to join the network if it matches its password.

Step 3. The AP derives and distributes keys to the wireless clients.

Step 4. The AP and wireless clients use the TKIP encryption process to encrypt data exchanged between them.

Figure 2-6 WPA-PSK Authentication

2.2.5 WPA with RADIUS Application Example

You need the IP address of the RADIUS server, its port number (default is 1812), and the RADIUS shared secret. A WPA application example with an external RADIUS server looks as follows. “A” is the RADIUS server. “DS” is the distribution system.

Step 1. The AP passes the wireless client’s authentication request to the RADIUS server.

Step 2. The RADIUS server then checks the user's identification against its database and grants or denies network access accordingly.

Wireless LAN Network

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Contents

Page Copyright ZyXEL Limited Warranty Information for Canadian Users Federal Communications Commission (FCC) Interference Statement1 Customer Support Page Page Table of Contents Appendix B Types of EAP Authentication List of Figures List of Tables Preface Graphics Icons Key Getting Started 1.1About Your ZyXEL G-162 1.2ZyXEL G-162Hardware and Utility Installation 1.3Ways to Configure the ZyXEL G-162 1.4Disable Windows XP Wireless LAN Configuration Tool Figure 1-2Windows XP: Wireless Network Connection Status Properties Wireless Networks Page 1.5Accessing the ZyXEL Utility Table 1-1ZyXEL Utility: System Tray Icon Click the icon (located in the top right corner) to display the on-linehelp window Wireless LAN Network 2.1Overview 2.1.1SSID 2.1.2 Channel 2.1.3 Transmission Rate (Transfer Rate) 2.1.4 Wireless Network Application 2.1.5 Roaming 2.2Wireless LAN Security 2.2.1 Data Encryption with WEP 2.2.2 IEEE 2.2.3 WPA 2.2.4 WPA-PSKApplication Example 2.2.5 WPA with RADIUS Application Example 2.3Fragmentation Threshold 2.4RTS/CTS Threshold Figure 2-8RTS Threshold 2.5Authentication Type Using the ZyXEL Utility 3.1The Link Info Screen Table 3-1Link Info 3.1.1 Trend Chart 3.2The Site Survey Screen Figure 3-3Site Survey Table 3-3Site Survey 3.2.1 Connecting to a Network 3.2.2 Security Settings The values for the WEP keys must be set up exactly the same on all wireless devices in the same wireless LAN ASCII WEP keys are case sensitive WPA-PSK Figure 3-5Site Survey: Security Settings: WPA-PSK Table 3-5Site Survey: Security Settings: WPA-PSK WPA Figure 3-6Site Survey: Security Settings: WPA Table 3-6Site Survey: Security Settings: WPA obtain the certificate(s) from a certificate authority (CA) Consult your network administrator for more information Figure 3-7Site Survey: Security Settings: Table 3-7Site Survey: Security Settings: You must first have a wired connection to a network and 3.3The Profile Screen Figure 3-8Profile Table 3-8Profile 3.3.1 Adding a New Profile Figure 3-9Profile: Add New Profile Table 3-9Profile: Add New Profile Page Figure 3-10Profile: Select a Channel Table 3-10Profile: Select a Channel WEP WPA-PSK WPA Figure 3-11Profile: Wireless Settings Figure 3-12Profile: Security Settings Save Back Exit Page 3.4The Adapter Screen Figure 3-15Adapter Table 3-11Adapter Page Page Maintenance 4.1The About Screen 4.2Uninstalling the ZyXEL Utility 4.3Upgrading the ZyXEL Utility Troubleshooting 5.1Problems Starting the ZyXEL Utility Program 5.2Problem with the Link Status 5.3Problems Communicating With Other Computers Appendix A Product Specifications Page Appendix B Types of EAP Authentication LEAP Comparison of EAP Authentication Types Appendix C Index