access including cable modems and xDSL
(Digital Subscriber Line) present intriguing
possibilities and new challenges for service
providers.
New Protocols
Today, special tunneling protocols such as
Mobile IP or L2TP are required for VPN func-
tionality.Emerging standards such as IPSEC
and IP Version 6 enable secure,encrypted
encapsulation and tunneling for user data.
Since customers are extremely sensitive
about the privacy of their data over the
public network,more highly integrated VPN
techniques will,no doubt,be popular.
Dial VPN Services represents an industry and
a class of service that is still in its infancy.
Carriers will meet the challenge of replacing
corporations’in-house remote access solu-
tions by delive ring re l i a b l e,e n h a n ced serv i ce s.
In turn ,c u s tomers will foster growth of
high-quality Dial VPN services through their
willingness to pay a premium for service
level guarantees.
Finally,many of the standards that these
services will be based on are still under
development.This is important,since
focusing on a complete,standards-based
solution will ensure that investments in
outsourced networking services do,in
fact,meet the availability, security,perfor-
mance, and cost requirements of enterprise
customers.The vendor who delivers the
complete,standards-based solution will
ultimately dominate.
Conclusion
14 White Paper Understanding and Implementing Dial VPN Services
When discussing the future of the VPN
market,it is important to note a few of
the trends,some of which are already
taking place.
Whole Network Outsourcing
Customers are seriously considering
outsourcing their remote access infrastruc-
ture. In the future,some enterprises will out-
source their entire network to integrators
and service providers with demonstrated
expertise in full support of network infra-
structures.In this model,the customer owns
its data and its hosts.The network“plumb-
ing”, however,is managed completely by the
service provider.Integrators such as Perot
Systems already provide this type of service.
Alternative VPN Access Types
Most Dial VPN offerings today, including
BayStream Dial VPN Services,are based on
switched connectivity to the Dial VPN.While
most connections to corporate intranets or
the Internet are initiated via the PSTN with
ISDN or analog modem calls,other means of
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