ZyXEL Access Point G1000 v2 91-005-124001B User Manual

Product codes
91-005-124001B
Page of 198
ZyXEL G-1000 v2 User’s Guide
176
PEAP (Protected EAP)   
Like EAP-TTLS, server-side certificate authentication is used to establish a secure connection, 
then use simple username and password methods through the secured connection to 
authenticate the clients, thus hiding client identity. However, PEAP only supports EAP 
methods, such as EAP-MD5, EAP-MSCHAPv2 and EAP-GTC (EAP-Generic Token Card), 
for client authentication. EAP-GTC is implemented only by Cisco.
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 screen. You may still configure and store keys here, 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.
WEP Authentication
Three different methods can be used to authenticate wireless stations to the network: Open 
System
Shared Key, and Auto. The following figure illustrates the steps involved.
Table 85   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