© 2006 Cisco Systems, Inc. All rights reserved. Optimizing Converged Cisco Networks (ONT) Module 6: Implement Wireless Scalability.

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Presentation transcript:

© 2006 Cisco Systems, Inc. All rights reserved. Optimizing Converged Cisco Networks (ONT) Module 6: Implement Wireless Scalability

© 2006 Cisco Systems, Inc. All rights reserved. Module 6: Implement Wireless Scalability Lesson 6.5: Configuring Encryption and Authentication on Lightweight Access Points

© 2006 Cisco Systems, Inc. All rights reserved. Objectives  Describe how to use the WLAN controller to configure WLAN security options: Open authentication WEP key authentication WPA preshared key Web authentication 802.1x WPA2

© 2006 Cisco Systems, Inc. All rights reserved. WLAN Controllers ProductFeatures Cisco 4400 Series Wireless LAN Controllers For medium-to-large enterprise facilities The Cisco 4402 with 2 Gigabit Ethernet ports supports configurations for 12, 25, and 50 access points Cisco 4404 with 4 Gigabit Ethernet ports supports 100 access points Cisco 2100 Series Wireless LAN Controllers For small to medium-sized businesses or branch offices

© 2006 Cisco Systems, Inc. All rights reserved. WLAN Controller Topology and Network Connections WLAN Controller

© 2006 Cisco Systems, Inc. All rights reserved. Configuring Open Authentication

© 2006 Cisco Systems, Inc. All rights reserved. Configuring Static WEP Key Authentication

© 2006 Cisco Systems, Inc. All rights reserved. Configuring WPA Preshared Key This example shows WPA preshared key.

© 2006 Cisco Systems, Inc. All rights reserved. Web Authentication  Users authenticate via a web browser interface.  Clients using HTTP are automatically directed to a login page: Customizable for logos and text Maximum simultaneous authentication requests—21 Maximum local web authentication users—2500  Generally used for guest access: Data is not secure between the access point and the client.

© 2006 Cisco Systems, Inc. All rights reserved. Configuring Web Authentication

© 2006 Cisco Systems, Inc. All rights reserved. Customizing the Web Login Page

© 2006 Cisco Systems, Inc. All rights reserved x Authentication Microsoft Windows XP clients support only 40-bit or 104-bit dynamic WEP keys.

© 2006 Cisco Systems, Inc. All rights reserved. Configuring WPA with 802.1x This example shows WPA with dynamic keys.

© 2006 Cisco Systems, Inc. All rights reserved. WPA2 This example shows WPA2 with dynamic keys.

© 2006 Cisco Systems, Inc. All rights reserved. Self Check 1.What is web authentication? 2.How is it typically used? 3.Which controller supports web authentication?

© 2006 Cisco Systems, Inc. All rights reserved. Summary  Authentication and encryption are the two primary facilities for securing the WLAN. While encryption using static WEP keys is very vulnerable, WLANs can now be configured to support EAP and the 802.1x standards including LEAP, EAP-FAST, EAP-TLS, PEAP, WPA, and WPA2.

© 2006 Cisco Systems, Inc. All rights reserved. Q and A

© 2006 Cisco Systems, Inc. All rights reserved. Resources  Five Steps to Securing Your Wireless LAN and Preventing Wireless Threats etworking_solutions_white_paper0900aecd8042e23b.shtml  Wireless LAN Security White Paper etworking_solutions_white_paper09186a00800b469f.shtml  Security of the WEP algorithm

© 2006 Cisco Systems, Inc. All rights reserved.