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Corporate interest in outsourcing remote

access is increasing as some companies

focus more strongly on their core businesses

by off-loading support and purchase of

dial-access solutions.As confidence in using

the Internet as a viable network infrastructure

builds, customer demand for value-added

services that use the Internet is increasing.

The number of mobile workers and telecom-

muting workers is also growing,making Dial

Virtual Private Networks (VPNs) one of the

most popular of these value-added services.

Dial VPNs benefit both the enterprise and

the service provider:

• Corporations that outsource remote

a c cess fo rego costs incurred in purc h a s i n g

and supporting an enterprise remote

access infrastructure.

• Corporations can leverage the ubiquity

of the Internet to provide seamless and

secure connectivity to both employees

and business partners over a single

network infrastructure.

• From the enterprise perspective,Dial

VPN-based extranets can enhance

relationships with customers,business

partners,and suppliers.

• Phone companies can alleviate end-

point congestion in the PSTN by

implementing Dial VPN services.

• ISPs can increase revenues by offering

secure, outsourced remote access

services to corporations.

• ISPs may choose to differentiate their

Dial VPN offerings by layering in extranet

and content-related services,as well.

Secure communications,industry-standard

network management,and rich network

administration services are important fea-

tures for network managers implementing

Dial VPN services.Secure communications

are provided through a combination of tun-

neling,encryption,and user authentication.

Tunneling links two network devices

such that the devices appear to exist on

a common,private backbone. Encryption

and user authentication provide necessary

security services for private traffic traversing

the public network.

In deploying Dial VPN services,network

managers require device and element-level

management capabilities,value-added

applications,and the ability to customize.

Value-added applications include network

design,network simulation and validation

features, and network operations tools.

Accounting and billing features are critical

utilities for service providers,particularly

those looking to increase net income via

these services.The network management

service must provide both user and

subscriber accounting.These features not

only support efficient,profitable operations

but also help to measure the reliability of

the service.

In choosing a remote access solution,

corporations and service providers should

look toward a vendor with broad-based

expertise in the networking industry paired

with a set of industry-leading, standards-

based products and technologies.Vendors

providing high-value,carrier-class, interop-

erable solutions will dominate in the Dial

VPN marketplace.

Executive Summary

2 White Paper Understanding and Implementing Dial VPN Services

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