Nortel Contivity Extranet Switch 2500 Getting Started page 14

Getting Started with the Contivity Extranet Switch 2500
E-M ail
S erver
NT
Server
Authentication
Server
Intranet
Figure 1-1.
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.
1-2
LAN
Contivity
Extranet
Switch
Firewall Router
Extranet
An Intranet and the Internet Make Up an Extranet
Cable or D SL
ISP PO P
IS P PO P
ISP P O P
ISP PO P
ISDN
Internet
Rem ote
Em ployee
P artner
56K
M odem
Reseller