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Broadcast key rotation, Synchronizing security features -14, Synchronizing security features – Rockwell Automation 2727-T7P30D1F MobileView Tablet T750 User Manual User Manual

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Publication 2727-UM001D-EN-P - March 2004

5-14 Communications Configuration

Broadcast Key Rotation

EAP authentication provides dynamic unicast WEP keys for client
devices but uses static broadcast, or multicast, keys. When you enable
broadcast WEP key rotation, the access point provides a dynamic
broadcast WEP key and changes it at the interval you select. When
you enable this feature, only wireless client devices using LEAP or
EAP-TLS authentication can associate to the access point. Client
devices using static WEP (with open, shared key, or EAP-MD5
authentication) cannot associate.

Synchronizing Security Features

In order to use any of the security features discussed in this section,
both your client adapter and the access point to which it will associate
must be set appropriately. Table 5.1 indicates the client and access
point settings required for each security feature. This chapter also
provides specific instructions for enabling the security features on
your client adapter. Refer to the Cisco Aironet Access Point Software
Configuration Guide for instructions on enabling the features on the
access point.

Table 5.1 Client and Access Point Security Settings

Security Feature

Client Setting

Access Point Setting

Static WEP with open
authentication

Create a WEP key and
enable Use Static WEP Keys
and Open Authentication

Set up and enable WEP and
enable Open Authentication

Static WEP with shared key
authentication

Create a WEP key and
enable Use Static WEP Keys
and Shared Key
Authentication

Set up and enable WEP and
enable Shared Key
Authentication

LEAP authentication

Enable LEAP

Set up and enable WEP and
enable Network-EAP

MIC

Use driver version 2.2x or
greater

Set up and enable WEP with
full encryption, set MIC to
MMH, and set Use Aironet
Extensions to Yes

TKIP

Use firmware version
4.25.23 or greater

Set up and enable WEP, set
TKIP to Cisco, and set Use
Aironet Extensions to Yes

Broadcast key rotation

Use firmware version
4.25.23 or greater and
enable LEAP

Set up and enable WEP and
set Broadcast WEP Key
Rotation Interval to any
value other then zero (0)