Cisco Systems CB21AG manual Default Open

Chapter 5 Configuring the Client Adapter

Setting Advanced Parameters

Table 5-3	Profile Management Advanced Parameters (continued)
Parameter		Description
802.11 Authentication Mode		Specifies how your client adapter attempts to authenticate to an access
		point. Open and shared authentication do not rely on a RADIUS server
		on your network.
		Options: Auto, Open, or Shared
		Default: Open
		802.11 Authentication Mode	Description
		Auto	Causes the client adapter to attempt to
			authenticate using shared authentication.
			If it fails, the client adapter then attempts
			to authenticate using open authentication.
		Open	Enables your client adapter, regardless of
			its WEP settings, to authenticate and
			attempt to communicate with an access
			point. However, communication can occur
			only if the adapter’s WEP key matches that
			of the access point.
		Shared	Enables your client adapter to authenticate
			and communicate only with access points
			that have the same WEP key.
			During shared key authentication, the
			access point sends an unencrypted
			challenge packet to the client adapter,
			which encrypts the packet and sends it
			back to the access point. The access point
			attempts to decrypt the encrypted packet
			and sends an authentication response
			packet indicating the success or failure of
			the decryption back to the client adapter. If
			the packet is successfully encrypted/
			decrypted, the user is considered to be
			authenticated.
		Note Cisco recommends that Auto and Shared not be used because
		they present a security risk.
		Note Your client adapter’s 802.11 authentication mode setting must
		match that of the access points with which it is to communicate.
		Otherwise, your client adapter may not be able to authenticate
		to them.
		Note If this profile is configured for use in an ad hoc network or is
		not configured to use static WEP, this parameter is unavailable,
		and Open authentication is used.

Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide

5-12 OL-4211-03