AirLive RS-2500 - Manual (Page 243)

25. Network Glossary
AirLive RS-2500 User’s Manual 238
25.3 VPN
VPN
Virtual Private Network. A type of technology designed to increase the security of
information over the Internet. VPN creates a private encrypted tunnel from the end user’s
computer, through the local wireless network, through the Internet, all the way to the
orporate network.
sec
set of protocols developed by the IETF to support secure exchange of
e data of each packet, but leaves the header untouched.
Tunnel mode encrypts both the header and the payload. On the receiving
ide, an IPSec-compliant device decrypts each packet.
PTP
oint-to-Point Tunneling Protocol: A VPN protocol developed by PPTP Forum. With
PTP, users can dial in to their corporate network via the Internet. If users require data
ncryption when using the Windows PPTP client, the remote VPN server must support
PPE (Microsoft Point-To-Point Encryption Protocol) encryption. PPTP is also used by
ome ISP for user authentication, particularly when pairing with legacy Alcatel / Thomson
DSL modem.
reshare Key
he IKE VPN must be defined with a Preshared Key. The Key may be up to 128 bytes long.
c
SSL
Security Sockets Layer. Commonly used encryption scheme used by many online retail and
banking sites to protect the financial integrity of transactions. When a SSL session begins,
the server sends its public key to the browser. The browser then sends a randomly
generated secret key back to the server in order to have a secret key exchange for that
session. SSL VPN is also known as Web VPN.
IP
IP Security. A
packets at the IP layer. IPsec has been deployed widely to implement Virtual Private
Networks (VPNs). IPsec supports two encryption modes: Transport and Tunnel.
Transport mode encrypts only th
The more secure
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