Velocity Edge GX440 Guide de l'utilisateur Page 123

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Rev 1 Oct.13 123
6
6: VPN Configuration
The AirLink device can act as a Virtual Private Network (VPN) device,
providing enterprise VPN access to any device connected to the
AirLink device even when a device has no VPN client capability on its
own. The AirLink device supports three types of VPN: IPsec, GRE,
and SSL. The AirLink device can support up to five VPN tunnels at
the same time.
IPsec
The IP protocol that drives the Internet is inherently insecure. Internet
Protocol Security (IPsec), which is a standards-based protocol,
secures communications of IP packets over public networks.
IPsec is a common network layer security control and is used to
create a virtual private network (VPN).
The advantages of using the IPsec feature includes:
Data Protection: Data Content Confidentiality allows you to
protect your data from any unauthorized view, because the data
is encrypted (encryption algorithms are used).
Access Control: Access Control implies a security service that
prevents unauthorized use of a Security Gateway, a network
behind a gateway or bandwidth on that network.
Data Origin Authentication: Data Origin Authentication verifies
the actual sender, thus eliminating the possibility of forging the
actual sender’s identification by a third-party.
Data Integrity: Data Integrity Authentication allows both ends of
the communication channel to confirm that the original data sent
has been received as transmitted, without being tampered with in
transit. This is achieved by using authentication algorithms and
their outputs.
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