Maestro e200 series, Руководство пользователя

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MAESTRO WIRELESS SOLUTIONS | Services
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E PACK | USER MANUAL VERSION 2.3 http://support.maestro-wireless.com
9.1 VPN
Services > VPN
A Virtual Private Network (VPN) is a tunnel carrying traffic of a private network
from one endpoint system to another over a public network such as the
Internet.
The traffic of private network carried over public network is unacquainted of
the intermediate hops between the two endpoints. Similarly, the intermediate
hops are also not aware that they are carrying the network packets that are
traversing the tunnel. The tunnel may optionally compress and/or encrypt the
data, providing enhanced performance and some measure of security.
9.1.1 PPTP
Network > Interface > PPTP
Point-to-Point Tunneling Protocol (PPTP) is the extension of Point-to-Point
Protocol (PPP) for traditional dial-up network connection. It is the most
common protocol that enables the corporate to implement Virtual Private
Network (VPN) for extending their internal corporate network.
PPTP client/user connects to their VPN server using computer, router or any
networking device that supports PPTP. A TCP control connection is then
established from client to the server in order to create a virtual tunnel. PPTP
provides security by authenticating the users and packet filtering. PPTP controls
the mapping and managing of VPN tunnel and the data inside the tunnel by
encrypting and maintaining the connection. It stores the data within a PPP
packet, which are then stored into IP Packets to be used for their destination.
PPTP encrypts and compresses these packets using PPP-based protocols such
as PAP and CHAP. PPTP uses GRE (General Routing Encapsulation) to
send/receive data.