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Cisco Aironet CB20A Configuration Manual
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Cisco Aironet CB20A Configuration Manual

Cisco Aironet CB20A Configuration Manual

Wireless lan client adapters
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Configuring the Client Adapter
This chapter explains how to set the configuration parameters for a specific profile.
The following topics are covered in this chapter:
Overview, page 5-2
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Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows
OL-1394-08
C H A P T E R
5
5-1

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Summary of Contents for Cisco Aironet CB20A

  • Page 1: Table Of Contents

    • Setting Advanced Ad Hoc Parameters, page 5-18 • Setting Network Security Parameters, page 5-21 • Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 C H A P T E R...

  • Page 2: Overview

    Parameter Category System RF network Advanced infrastructure Advanced ad hoc Network security Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows Chapter 5 Page Number page 5-3 page 5-7 page 5-14 page 5-18...

  • Page 3: Setting System Parameters

    System Parameters Screen Table 5-2 lists and describes the client adapter’s system parameters. Follow the instructions in the table to change any parameters. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08...
  • Page 4 Client Name SSID1 SSID2 SSID3 Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows Chapter 5 Description A logical name for your workstation. It allows an administrator to determine which devices are connected to the access point without having to memorize every MAC address.
  • Page 5 Table 5-2 System Parameters (continued) Parameter Power Save Mode Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Description Sets your client adapter to its optimum power consumption setting. Options: CAM, Max PSP, or Fast PSP...
  • Page 6 Go to the next section to set additional parameters or click OK to return to the Profile Manager screen. On the Profile Manager screen, click OK or Apply to save your changes. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows Chapter 5 Description Specifies the type of network in which your client adapter is installed.

  • Page 7: Setting Rf Network Parameters

    To access this screen, choose the RF Network tab from the Properties screens. Figure 5-2 RF Network Screen Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08...
  • Page 8 Table 5-3 RF Network Parameters Parameter Data Rate Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows Chapter 5 Description Specifies the rate at which your client adapter should transmit or receive packets to or from access points (in infrastructure mode) or other clients (in ad hoc mode).
  • Page 9 Use Short Radio Headers World Mode Scan For A Better Access Point Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Description Checking this check box sets your client adapter to use short radio headers.
  • Page 10 Table 5-3 RF Network Parameters (continued) Parameter Channel Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-10 Chapter 5 Description Specifies the frequency that your client adapter will use as the channel for communications.
  • Page 11 Table 5-3 RF Network Parameters (continued) Parameter Transmit Power Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Description Defines the power level at which your client adapter transmits. This value must not be higher than that allowed by your country’s regulatory agency (FCC in the U.S., DOC in Canada, ETSI in Europe, MKK in...
  • Page 12 Table 5-3 RF Network Parameters (continued) Parameter Clear Channel Assessment Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-12 Chapter 5 Description Specifies the method that determines whether the channel on which your client adapter will operate is clear prior to the transmission of data.
  • Page 13 Go to the next section to set additional parameters or click OK to return to the Profile Manager screen. On the Profile Manager screen, click OK or Apply to save your changes. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08...

  • Page 14: Setting Advanced Infrastructure Parameters

    To access this screen, choose the Advanced (Infrastructure) tab from the Properties screens. Figure 5-3 Advanced (Infrastructure) Screen Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-14 OL-1394-08...
  • Page 15 Advanced (Infrastructure) Parameters Parameter Antenna Mode (Receive) Antenna Mode (Transmit) Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Setting Advanced Infrastructure Parameters Description Specifies the antenna that your client adapter uses to receive data.
  • Page 16 Parameter Specified Access Point 1- 4 RTS Threshold RTS Retry Limit Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-16 Chapter 5 Description Specifies the MAC addresses of up to four preferred access points with which the client adapter can associate.
  • Page 17 Go to the next section to set additional parameters or click OK to return to the Profile Manager screen. On the Profile Manager screen, click OK or Apply to save your changes. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08...

  • Page 18: Setting Advanced Ad Hoc Parameters

    To access this screen, choose the Advanced (Ad Hoc) tab from the Properties screens. Figure 5-4 Advanced (Ad Hoc) Screen Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-18 OL-1394-08...
  • Page 19 Advanced (Ad Hoc) Parameters Parameter Antenna Mode (Receive) Antenna Mode (Transmit) Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Description Specifies the antenna that your client adapter uses to receive data.
  • Page 20 Parameter RTS Threshold RTS Retry Limit Wake Duration (Kμs) Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-20 Chapter 5 Description Specifies the size of the data packet that the low-level RF protocol issues to a request-to-send (RTS) packet.

  • Page 21: Setting Network Security Parameters

    To access this screen, choose the Network Security tab from the Properties screens. Figure 5-5 Network Security Screen Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Description Specifies the duration between beacon packets, which are used to help clients find each other in ad hoc mode.
  • Page 22 If you want to change some of the other parameters on the Network Security screen, go to the next • section. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-22 Chapter 5 section below.
  • Page 23 RADIUS servers that support LEAP include Cisco Secure ACS version 2.6 and later, Cisco Access Registrar version 1.7 and later, and Funk Software’s Steel-Belted RADIUS version 3.0 and later. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 “EAP (with Dynamic WEP Keys)”...
  • Page 24 LEAP. • EAP-FAST—This authentication type (Flexible Authentication via Secure Tunneling) is available for 350 series and CB20A cards on computers running Windows 2000 or XP. EAP-FAST uses a three-phased tunneled authentication process to provide advanced 802.1X EAP mutual authentication.
  • Page 25 (such as NDS), PEAP requires you to enter your username, password, and domain name in order to start the authentication process. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08...
  • Page 26 The client does not gain full access to the network until authentication between the client Note and the RADIUS server is successful. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-26 Windows XP Service Pack 1 and the Microsoft 802.1X supplicant for Windows 2000 include Microsoft’s PEAP supplicant, which supports a Windows username and...
  • Page 27 PMK. Only 350 series and CB20A cards that are installed on computers running Windows 2000 or XP and running LEAP, EAP-FAST, or host-based EAP authentication can be used with WPA. Support for WPA is available in the software components included in Install Wizard version 1.2 or later.
  • Page 28 If the Microsoft 802.1X supplicant is installed on your computer, you must disable one or two Windows Note parameters in order for this feature to operate correctly. Refer to Step 15 in the Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-28 section or Step 12 in the “Enabling EAP-FAST”...
  • Page 29 Access point firmware version 11.10T or later is required to enable these security features. Refer to the Note documentation for your access point for instructions on enabling these security features. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Setting Network Security Parameters...
  • Page 30 LEAP, EAP-FAST, EAP-TLS, PEAP, or EAP-SIM authentication can associate to the access point. Client devices using static WEP (with open or shared key authentication) cannot associate. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-30 Chapter 5...
  • Page 31 LEAP authentication LEAP authentication with EAP-FAST authentication EAP-FAST authentication with WPA Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Table 5-6 Client Setting Disable Network Authentication, enable Static WEP and Open...
  • Page 32 If using ACU to configure card If using Windows XP to configure card Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-32 Client Setting Enable Host Based EAP (802.1x) and Dynamic WEP in ACU and select Enable network access control using IEEE 802.1X (or...
  • Page 33 If using ACU to configure card If using Windows XP to configure card Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Client Setting Enable Wi-Fi Protected Access (WPA), Host Based EAP (WPA),...
  • Page 34 Reporting access points that fail LEAP or EAP-FAST authentication TKIP Broadcast key rotation Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-34 Client Setting Enable Wi-Fi Protected Access (WPA), Host Based EAP (WPA),...
  • Page 35 128-bit client adapters can use 40- or 128-bit keys, but 40-bit adapters can use only 40-bit keys. If 128 bit is not supported by the client adapter, this option is unavailable. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08...
  • Page 36 Click OK to return to the Profile Manager screen; then click OK or Apply to save your changes. Step 10 Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-36 Chapter 5...
  • Page 37 Network Security screen, click OK, and click OK or Apply on the Profile Manager screen. Choosing LEAP or EAP-FAST under Network Authentication on the Network Security screen disables Note static WEP automatically. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 5-35. Setting Network Security Parameters...
  • Page 38 Client adapters must support WEP and use the firmware, drivers, utilities, and security modules included in the Install Wizard file. To use WPA, 350 series and CB20A client adapters must use the software included in Install Wizard • version 1.2 or later on a computer running Windows 2000 or XP.
  • Page 39 The Use Saved User Name and Password option is available only if the Allow Saved LEAP Note User Name and Password option was enabled (set to Yes) during installation. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Setting Network Security Parameters...
  • Page 40 No Network Connection Unless User Is Logged In check box. The default setting is checked. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-40 Usernames are limited to 64 ASCII characters in the software included in Install Wizard version 1.3 or later and to 32 ASCII characters in previous Install Wizard versions.
  • Page 41 Uncheck the Use Windows to configure my wireless network settings check box unless you are using Windows XP Service Pack 1. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 “Fast Roaming (CCKM)” section on page 5-28 Step c.
  • Page 42 Before you can enable EAP-FAST authentication, your network devices must meet the following requirements: 350 series and CB20A client adapters must use the software included in Install Wizard version 1.3 • or later on a computer running Windows 2000 or XP.
  • Page 43 Click Configure. The EAP-FAST Settings screen appears (see Step 3 Figure 5-8 EAP-FAST Settings Screen Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Setting Network Security Parameters Figure 5-8).
  • Page 44 RADIUS server. Note Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-44 Usernames are limited to 64 ASCII characters, and passwords are limited to 32 ASCII characters.
  • Page 45 Provisioning occurs only upon initial negotiation of the PAC or upon PAC expiration. After the PAC is provisioned, it serves as the per-user key by which authentication transactions are secured. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Step...
  • Page 46 Click the PAC file (*.pac) so that it appears in the File name box at the bottom of the screen. Note Click the Open button. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-46 5-9).
  • Page 47 Click OK to exit the EAP-FAST Settings screen. Step 11 Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 The PAC file you are about to import will be made accessible to all users of your system if your profile is configured for global PACs.
  • Page 48 Configure. If your profile’s SSID is not listed, click Add, enter your profile’s SSID in the Network name (SSID) field, and choose the Authentication tab. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-48 “Fast Roaming (CCKM)”...
  • Page 49 The Microsoft 802.1X supplicant must be installed on your Windows device. • To use WPA, you must use a 350 series or CB20A client adapter with the software included in Install • Wizard version 1.2 or later on a computer running Windows 2000 or XP. Also, you must install additional software with WPA support.
  • Page 50 Dial-up Connections. Right-click Local Area Connection. Click Properties. The Local Area Connection Properties screen appears. Go to the Windows” section on page Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-50 “Wi-Fi Protected Access (WPA)” section on page 5-27 Step 2 5-54.
  • Page 51 Follow these steps to enable WPA in Windows XP Service Pack 1 and Microsoft support patch 815485. Choose the Wireless Networks tab on the Wireless Network Connection Properties screen. The Step 1 following screen appears (see Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 section below. 5-54.
  • Page 52 Step 3 Configure. If your profile’s SSID is not listed, click Add. The Wireless Network Properties screen appears (see Figure Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-52 5-12). Chapter 5...
  • Page 53 Go to the “Enabling EAP Authentication in Windows” Step 7 this profile. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Setting Network Security Parameters section below to enable EAP authentication for...
  • Page 54 If you are planning to use PEAP, go to the • If you are planning to use EAP-SIM, go to the • Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-54 Chapter 5 Configuring the Client Adapter Figure 5-13).
  • Page 55 Click Properties. The Certificate Properties screen (see Certificate Properties screen appears (see Figure 5-14 Certificate Properties Screen - Windows 98, 98 SE, NT, and Me Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Setting Network Security Parameters...
  • Page 56 Figure 5-15 Smart Card or other Certificate Properties Screen - Windows 2000 and XP Figure 5-16 Smart Card or Other Certificate Properties Screen - Windows XP Service Pack 1 Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-56...
  • Page 57 Click OK two or three times to save your settings. The configuration is complete. Step 8 Refer to Chapter 6 Step 9 Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 for instructions on authenticating using EAP-TLS. Setting Network Security Parameters 5-57...
  • Page 58 If you leave this field blank, the server name is not verified, and a connection is established as Note long as the certificate is valid. Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-58 Chapter 5...
  • Page 59 Currently Generic Token Card is the only second phase EAP type available. Click Properties. The Step 8 Generic Token Card Properties screen appears (see Figure 5-18 Generic Token Card Properties Screen Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 Setting Network Security Parameters Figure 5-18).
  • Page 60 Click Properties. The SIM Authentication Properties screen appears (see Step 2 Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-60 The SofToken Program Path field is unavailable if a software token program other than Secure Computing SofToken Version 1.3 is selected.
  • Page 61 Refer to Chapter 6 Step 6 Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-08 “Turning Your Client Adapter’s Radio On or Off” section for instructions on authenticating using EAP-SIM.
  • Page 62 Uncheck the Enable network access control using IEEE 802.1X or Enable IEEE 802.1x Step 5 authentication for this network check box. Click OK. Step 6 Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows 5-62 Chapter 5 Configuring the Client Adapter Step...

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