WFS709TP ProSafe Smart Wireless Switch Software Administration Manual

Determine the Authentication Method

A user must authenticate to the system in order to access WLAN resources. Table 5-1describes the types of authentication that you can configure for a WLAN.

Table 5-1. Authentication Methods

Method

Description

 

 

None (also called open

This is the default authentication protocol. The client’s identity, in the form of the

system authentication)

media access control (MAC) address of the wireless adapter in the wireless

 

client, is passed to the WFS709TP. Essentially, any client requesting access to

 

the WLAN is authenticated.

 

 

IEEE 802.1x

The IEEE 802.1x authentication standard allows for the use of keys that are

 

dynamically generated on a per-user basic (as opposed to a static key that is the

 

same on all devices in the network).

 

The 802.1x standard requires the use of a RADIUS authentication server. Most

 

Lightweight Directory Access Protocol (LDAP) servers do not support 802.1x.

 

 

Wi-Fi Protected Access

WPA implements most of the IEEE 802.11i standard. It is designed for use with

(WPA)

an 802.1x authentication server (the Wi-Fi Alliance refers to this mode as WPA-

 

Enterprise). WPA uses the Temporal Key Integrity Protocol (TKIP) to dynamically

 

change keys and RC4 stream cipher to encrypt data.

 

 

WPA in pre-shared key

With WPA-PSK, all clients use the same key (the Wi-Fi Alliance refers to this

(PSK) mode (WPA-PSK)

mode as WPA-Personal).

 

In PSK mode, users must enter a passphrase from 8-63 characters to access

 

the network. PSK is intended for home and small office networks where

 

operating an 802.1x authentication server is not practical.

 

 

WPA2

WPA2 implements the full IEEE 802.11i standard. In addition to WPA features,

 

WPA2 provides Counter Mode with Cipher Blocking Chaining Message

 

Authentication Code Protocol (CCMP) for encryption that uses the Advanced

 

Encryption Standard (AES) algorithm. (The Wi-Fi Alliance refers to this mode as

 

WPA2-Enterprise.)

 

 

WPA2-PSK

WPA2-PSK is WPA2 used in PSK mode, where all clients use the same key.

 

(The Wi-Fi Alliance refers to this mode as WPA2-Personal.)

 

 

Captive Portal

Captive Portal allows users to authenticate using a web-based portal. Captive

 

Portal users can be authenticated to an external authentication server or to the

 

internal database on the WFS709TP. Captive Portal authentication does not

 

provide any type of data encryption beyond the SSL encryption used during the

 

authentication. You can configure WEP encryption or WPA-PSK, or WPA2-PSK

 

authentication in conjunction with Captive Portal.

 

 

MAC

Allows the media access control (MAC) address of a device to be authenticated

 

to an external authentication server or to the internal database on the

 

WFS709TP. You can configure MAC authentication in conjunction with WPA-

 

PSK or WPA2-PSK authentication.

 

 

 

 

5-2

Configuring WLANS

v1.0, June 2007

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NETGEAR WFS709TP-100NAS manual Determine the Authentication Method, Authentication Methods, Method Description