VIPA 900-2H611, Руководство пользователя

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Manual VIPA TM
Chapter 3 Deployment
HB39E - TM - RE_900-2H611 - Rev. 10/16 3-29
VPN connection - Talk2M
VPN (
V
irtual
P
rivate
N
etwork) is an interface in a network, which serves to
bind devices from their original net to another attainable net. The networks
do not have to be compatible. A VPN connection is secured by coding
mechanisms. The VPN technology serves for a safe and cost-effective
connection of branches respectively regional offices. Internal data may be
surely transferred via VPN.
VPN works with the client server principle, this means there must be always
at least a client and a server. The Teleservice module can be both client
and server.
For the communication of the assigned net with its communication partner
the original network packages a packed into a VPN protocol and
transferred to the communication partner. This is called
tunnel
.
A tunnel software on the client and server serves for embedding third-party
data to the tunnel and extracting the data at the other side.
In relation to other kinds of tunnel of a TCP/IP net the VPN tunnel is
characterized by the fact that it passes every network packages
independently of higher protocols (HTTP, FTP etc.). On this way it is
possible to transfer the data traffic of two net components practically
unrestricted through an other network, which is not safe like the Internet .
The TM-H uses OpenVPN. OpenVPN tunnels the data safety through one
port (standard port 1194). The data are coded SSL based 128bit. For the
transfer UDP is used by the OpenVPN protocol.
Internet
VPN Router
VPN Router
Data
TCP
UDP
IP MAC
TCP
UDP
IP MAC
Telegram
Encription
Data
Data
TCP
UDP
IP MAC
Data
Telegram
VPN
Functionality