Nortel 1010 用户指南

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Chapter 4 Configuring user tunnels 77
Nortel VPN Router Configuration — Basic Features 
 
For example, \Base is the base group, Research and Development and Finance are 
child groups of the base group, and they are parent groups to groups below them.
Groups are collections of users with the same access attributes and rights. If all 
users have identical characteristics, then only one group is necessary. You create 
multiple groups when you need different attributes. A Lightweight Directory 
Access Protocol (LDAP) database stores users, groups, and their attributes. You 
can store this database internally (on the Nortel VPN Router's hard disk) or 
externally (on a network host running LDAP server software). 
The Nortel VPN Router authenticates each user that tries to connect to the Nortel 
VPN Router by checking the user ID and password against a database. The Nortel 
VPN Router supports both LDAP and Remote Access Dial-In User Session 
(RADIUS) databases for authentication. When using LDAP for authentication, the 
user is always assigned to a group since LDAP also contains the user, group, and 
attribute information. 
When authenticating a Point-to-Point Tunneling Protocol (PPTP) client against a 
RADIUS database, the group for a user requesting a session can be returned from 
the RADIUS server as a RADIUS class attribute. 
When authenticating an IPsec client, the remote user is by default assigned to the 
group ID. If the group ID and group password are correct, the Nortel VPN Router 
passes the user ID and password (or token card) to the RADIUS server for 
authentication.   
You define a set of group attributes and give it a name. This group name is known 
as the Relative Distinguished Name and it is added to the LDAP database name 
when performing the database lookup. 
Note: The group name Certificates is not allowed as a valid group name 
when created under the /Base directory. If you change the name to 
Certificate, the group is created properly. If you create the group 
Certificates in a /Base subdirectory, it is created properly.