Manual ZyXEL NWD2205 (page 66 of 82) (English)

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Appendix A Wireless LANs

NWD2205 User’s Guide

LEAP

LEAP (Lightweight Extensible Authentication Protocol) is a Cisco implementation of

IEEE 802.1x.

Dynamic WEP Key Exchange

The AP maps a unique key that is generated with the RADIUS server. This key

expires when the wireless connection times out, disconnects or reauthentication

times out. A new WEP key is generated each time reauthentication is performed.

If this feature is enabled, it is not necessary to configure a default encryption key

in the wireless security configuration screen. You may still configure and store

keys, but they will not be used while dynamic WEP is enabled.

Note: EAP-MD5 cannot be used with Dynamic WEP Key Exchange

For added security, certificate-based authentications (EAP-TLS, EAP-TTLS and

PEAP) use dynamic keys for data encryption. They are often deployed in corporate

environments, but for public deployment, a simple user name and password pair

is more practical. The following table is a comparison of the features of

authentication types.

WPA and WPA2

Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. WPA2

(IEEE 802.11i) is a wireless security standard that defines stronger encryption,

authentication and key management than WPA.

Key differences between WPA or WPA2 and WEP are improved data encryption and

user authentication.

Table 14 Comparison of EAP Authentication Types

EAP-MD5 EAP-TLS EAP-TTLS PEAP LEAP

Mutual Authentication No Yes Yes Yes Yes

Certificate – Client No Yes Optional Optional No

Certificate – Server No Yes Yes Yes No

Dynamic Key Exchange No Yes Yes Yes Yes

Credential Integrity None Strong Strong Strong Moderate

Deployment Difficulty Easy Hard Moderate Moderate Moderate

Client Identity

Protection

No No Yes Yes No

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