Bedienungsanleitung Intermec 751 (Seite 59 von 114) (Englisch)

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Chapter 3 — Configuring the Computer

741 and 751 Mobile Computers (Windows Mobile 5.0) User’s Manual 49

The 751 provides three types of security for your wireless network: Wi-Fi

Protected Access 2 (WPA2/802.11i), WPA, and WEP. 802.1x should be

referred to as an authentication method used for WPA and WPA2. Another

authentication method for WPA and WPA2 would be the Pre-Shared Key

(PSK).

Authentication Terminology

Acronym Description

EAP (Extensible

Authentication

Protocol)

802.11b/g uses this protocol to perform authentication. This is not

necessarily an authentication mechanism, but is a common

framework for transporting actual authentication protocols. Intermec

provides a number of EAP protocols for you to choose the best for

your network.

EAP-FAST

(Flexible

Authentication

via Secure

Tu n n e l i n g )

A publicly accessible IEEE 802.1X EAP type developed by Cisco

Systems. It is available as an IETF informational draft. An 802.1X

EAP type that does not require digital certificates, supports a variety

of user and password database types, supports password expiration

and change, and is flexible, easy to deploy, and easy to manage.

LEAP

(Lightweight

Extensible

Authentication

Protocol)

Also known as Cisco-Wireless EAP, provides username/password

based authentication between a wireless client and a RADIUS server.

In the 802.1x framework, traffic cannot pass through a wireless

network access point until it successfully authenticates itself.

EAP-PEAP

(Protected

Extensible

Authentication

Protocol)

Performs secure authentication against Windows domains and

directory services. It is comparable to EAP-TTLS both in its method

of operation and its security, though not as flexible. This does not

support the range of inside-the-tunnel authentication methods

supported by EAP-TTLS. Microsoft and Cisco both support this

protocol.

EAP-TLS

(Transport Layer

Security)

Based on the TLS (Transport Layer Security) protocol widely used to

secure web sites. This requires both the user and authentication server

have certificates for mutual authentication. While cryptically strong,

this requires corporations that deploy this to maintain a certificate

infrastructure for all users.

EAP-TTLS

(Tunneled

Tr a ns p or t L aye r

Security)

This protocol provides authentication like EAP-TLS but does not

require certificates for every user. Instead, authentication servers are

issued certificates. User authentication is done using a password or

other credentials that are transported in a securely encrypted “tunnel”

established using server certificates.

EAP-TTLS works by creating a secure, encrypted tunnel through

which you present your credentials to the authentication server. Thus,

inside EAP-TTLS there is another inner authentication protocol that

you must configure via Additional TTLS Settings.

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