ZyXEL Communications Internet Security Gateway ZyWALL 2 Series User Manual page 554

ZyWALL 2 Series User's Guide
TTLS supports EAP methods and legacy authentication methods such as PAP, CHAP, MS-CHAP and MS-
CHAP v2.
Mutual
Authentication
Certificate – Client
Certificate – Server
Dynamic Key
Exchange
Credential Security
Deployment
Difficulty
Wireless Security
Client Identity
Protection
F-2
EAP-MD5 EAP-TLS
No
No
No
No
None Strong
Easy
Poor
No
EAP-TTLS
Yes Yes
Yes Optional
Yes Yes
Yes Yes
Strong
Hard Moderate
Best Good
No Yes
Types of EAP Authentication