Avaya 3.7 User Manual Page 313

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Issue 4 May 2005 313
Glossary
A
Aggressive mode An IKE mechanism used in the first phase of establishing a security
association. Aggressive mode accomplishes the same authentication
negotiating goal between clients as Main mode but faster (three packets versus
six).
AH/ESP In an IPSec packet, the Authentication Header (AH) and Encapsulation Security
Payload (ESP) header. IKE VPNs authenticate IP packets using either an ESP
header as defined in draft-ietf-ipsec-esp-v2-03.txt, or AH as defined in IETF
draft-ietf-ipsec-auth-header-04.txt.
Alarms When a security gateway in the VPN reports an alarm condition, details about
the alarm including type, timestamp, and the originating security gateway can
be found in the VPNmanager main screen Alarm pane.
Authentication Generic
The process of ensuring that the data received is the same data that was sent
from the source.
Local
Local Authentication is used in non-dynamic VPNs (VPNs not using RADIUS or
a directory server (LDAP) as the authentication database). Here, the user is
authenticated from the database stored in the security gateway’s flash memory.
RADIUS
RADIUS Authentication uses an external RADIUS server and database for user
authentication.
LDAP
LDAP Authentication uses the designated directory server database for user
authentication.
B
Brute Force Attack A hack attack that attempts to recover a cryptographic key by trying all
reasonable possibilities.
C
CCD Client Configuration Download. The protocol used to download the VPN
session parameter configuration file from the security gateway to the remote
client as part of a successful authentication when the security gateway is
configured for Local Authentication.
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