Motorola 49901 Instruction Manual - Page 29

Virtual Private Network, Introduction, What is a VPN?, Advantages of a, Requirements of

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Target Applications Virtual Private Network Introduction This section provides a general description of features and applications within the Vanguard Virtual Private Network (VPN). These topics are discussed: • Cost-effective VPN Solutions • Hardware-based Encryption and Compression • Standard-based Tunneling and Encryption for IP Traffic • Multi-protocol Tunneling and Encryption • Frame Relay and X.25 Encryption For detailed information about a VPN, refer to your Virtual Private Network Manual (VPN) (Part Number T0103-10). What is a VPN? A Virtual Private Network (VPN) is a network that has the appearance and many of the advantages of a dedicated link but occurs over a shared network. Using a technique called "tunneling," packets are transmitted across a public routed network, such as the Internet or other commercially available network, in a private "tunnel" that simulates a point-to-point connection. This approach enables network traffic from many sources to travel through separate tunnels across the same infrastructure. A VPN allows network protocols to traverse incompatible infrastructures. A VPN also enables traffic from many sources to be differentiated, so that it can be directed to specific destinations and receive specific levels of service. Advantages of a VPN A VPN provides following advantages: • Cost Effectiveness - Infrastructure Cost - By using a VPN, a company need not invest money on connectivity equipment like leased lines, WAN switches etcetera. The connectivity is provided by the service provider. - Operational Cost - Costs involved with maintaining leased lines or a private WAN along with the money spent on people to maintain them can be avoided. • Manageability - A VPN is more easily managed when compared to a fully private network. Requirements of a VPN Below are some of the requirements of a VPN: • Connectivity - There needs to be network connectivity among the various corporate sites. This connectivity is typically used through the Internet. • Security - Data exchanged between the various corporate sites is confidential. When data is sent over a public network it is usually encrypted. The encryption algorithm must be robust enough to withstand any type of snooping. About the Vanguard 340 and 340 Enhanced 1-9

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About the Vanguard 340 and 340 Enhanced
1-9
Target Applications
Virtual Private Network
Introduction
This section provides a general description of features and applications within the
Vanguard Virtual Private Network (VPN).
These topics are discussed:
•
Cost-effective VPN Solutions
•
Hardware-based Encryption and Compression
•
Standard-based Tunneling and Encryption for IP Traffic
•
Multi-protocol Tunneling and Encryption
•
Frame Relay and X.25 Encryption
For detailed information about a VPN, refer to your
Virtual Private Network Manual
(VPN)
(Part Number T0103-10).
What is a VPN?
A Virtual Private Network (VPN) is a network that has the appearance and many of
the advantages of a dedicated link but occurs over a shared network. Using a
technique called “tunneling,” packets are transmitted across a public routed network,
such as the Internet or other commercially available network, in a private “tunnel”
that simulates a point-to-point connection.
This approach enables network traffic from many sources to travel through separate
tunnels across the same infrastructure. A VPN allows network protocols to traverse
incompatible infrastructures. A VPN also enables traffic from many sources to be
differentiated, so that it can be directed to specific destinations and receive specific
levels of service.
Advantages of a
VPN
A VPN provides following advantages:
•
Cost Effectiveness
-
Infrastructure Cost
- By using a VPN, a company need not invest money
on connectivity equipment like leased lines, WAN switches etcetera. The
connectivity is provided by the service provider.
-
Operational Cost
- Costs involved with maintaining leased lines or a
private WAN along with the money spent on people to maintain them can
be avoided.
•
Manageability
-
A VPN is more easily managed when compared to a fully private network.
Requirements of a
VPN
Below are some of the requirements of a VPN:
•
Connectivity
-
There needs to be network connectivity among the various corporate sites.
This connectivity is typically used through the Internet.
•
Security
-
Data exchanged between the various corporate sites is confidential. When
data is sent over a public network it is usually encrypted. The encryption
algorithm must be robust enough to withstand any type of snooping.