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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.
Contivity
Extranet
Switch
Reseller
Cable or DSL
LAN
56K
Modem
ISDN
Internet
Intranet
Extranet
Partner
Remote
Employee
Authentication
Server
E-Mail
Server
NT
Server
Firewall Router
ISP POP
ISP POP
ISP POP
ISP POP