Introduction Page - 4
Introduction
Virtual Private Networks (VPNs) have evolved from the growing needs of businesses
for more wide area network connectivity
.
This need has been driven by a combination
of technological progress and changing trends in work habits and work environments
.
The new VPN capability in Avaya’s IP Office gives small and medium sized businesses
a cost effective alternative to private leased line or Frame Relay (FR) services for
interconnecting sites
.
It also allows Small Medium Businesses (SMBs) to avoid the high
costs associated with teleworkers and the mobile workforce using Remote Access
Servers (RAS)
.
Instead they can leverage the ubiquity and low cost of the public
Internet.
Telecommuter
Telecommuter
& Home
& Home
Offices
Offices
Internet
Internet
Remote
Remote
Offices
Offices
Branch
Branch
Offices
Offices
Business
Business
Partners
Partners
Mobile
Mobile
Access
Access
Main Sites
Main Sites
Telecommuter
Telecommuter
& Home
& Home
Offices
Offices
Internet
Internet
Remote
Remote
Offices
Offices
Branch
Branch
Offices
Offices
Business
Business
Partners
Partners
Mobile
Mobile
Access
Access
Main Sites
Main Sites
Figure 1. A Virtual Private Network
IP Office VPN is implemented as a customer premises based VPN, by far the most
common method adopted amongst SMBs. VPN capability is integrated into the IP
Office server delivering a single box solution, with the ease of common management,
and lower total cost of ownership than a multi box solution.
General
This manual provides scenarios and worked examples for VPN implementation on an
IP Office running software level 3.0+. Throughout this manual is assumed that the
reader has networking knowledge but not necessarily any detailed understanding of
security protocols and encryption.
Further Reading
The IPSec and L2TP specifications are widely discussed in open forums. The reader is
encouraged to seek a fuller explanation than is provided within this manual. Refer to
the Virtual Private Network Consortium
http://www.vpnc.org/terms.html
for further
information.
