Cisco Cisco Aironet Wireless LAN Client Especificaciones descargar pdf (Pagina 60)

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Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Linux

OL-1376-02

Chapter 4 Enabling Security Features

Using the Client Encryption Manager

Figure 4-4 Network Security Screen

Step 4

Click the Enable WEP (Wired Equivalent Privacy) box.

Step 5 Click OK to save the setting and return to the ACU main screen.

Note See the “Setting Network Security Parameters” section on page 5-5 for a complete list of all network

security parameters.

Additional WEP Key Security Features

Client adapter firmware version 4.25.23 and greater support three new security features designed to

prevent sophisticated attacks on your wireless network’s WEP keys. These features (MIC, TKIP, and

broadcast key rotation) do not need to be enabled on the client adapter; they are supported automatically

in the driver and firmware version listed above. However, they must be enabled on the access point.

Note Access point firmware version 11.10T or later is required to enable these security features. Refer to the

Cisco Aironet Access Point Software Configuration Guide for instructions on enabling these security

features on the access point.

Message Integrity Check (MIC)

MIC prevents bit-flip attacks on encrypted packets. During a bit-flip attack, an intruder intercepts an

encrypted message, alters it slightly, and retransmits it, and the receiver accepts the retransmitted

message as legitimate. The MIC adds a few bytes to each packet to make the packets tamper-proof.

The ACU screen displays the word “(MIC)” next to the current status if MIC is supported by the client

adapter’s driver and firmware and is enabled on the access point.

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Cisco Cisco Aironet Wireless LAN Client Especificaciones Pagina 60