Nortel Nortel Contivity Extranet Switch 4500, Начало работы

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Getting Started with the Contivity Extranet Switch 4500
1-2
Figure 1-1. An Intranet and the Internet Make Up an Extranet
The Switch provides more security than traditional remote access schemes due to
the combination of authorization, authentication, privacy, and access control on a
per user basis. Additionally, the IPsec protocol and related Internet Security
Association & Key Management Protocol (ISAKMP) and the Oakley key
establishment protocol support further enhance the security offering.
For authentication and access control, the Switch supports an internal or external
Lightweight Directory Access Protocol (LDAP) server, and external Remote
Authentication Dial-In User Service (RADIUS) servers.
C ontivity
Extranet
Sw itch
R eseller
C able or D SL
LAN
56K
M odem
ISD N
Internet
Intranet
Extranet
P artner
R em ote
Em ployee
Authentication
Server
E-M ail
S erver
N T
Server
Firew all R outer
IS P PO P
ISP PO P
ISP P O P
ISP PO P