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1-7
VPN Client User Guide for Mac OS X
OL-5490-01
Chapter 1 Understanding the VPN Client
VPN Client Features
Extended Authentication
(XAUTH)
The capability of authenticating a user within IKE. This
authentication is in addition to the normal IKE phase 1
authentication, where the IPSec devices authenticate each other.
The extended authentication exchange within IKE does not replace
the existing IKE authentication.
Mode Configuration Also known as ISAKMP Configuration Method
Tunnel Encapsulation Modes
• IPSec over UDP (NAT/PAT)
• IPSec over TCP (NAT/PAT)
IP compression (IPCOMP) using
LZS
Data compression algorithm
Table 1-5 IPSec Attributes (continued)
IPSec Attribute Description