Routing and WAN connections
BAT54-Rail/F..
Release
7.54
06/08
11.9
N:N mapping
427
In this example network servers of company A and B should have access
over a VPN tunnel to the respective other network. All stations of the LAN
should have access to the server of the remote network. For the time being,
there is no access possible to the other network, because both networks use
the same address range. If one station of the network of company A wants to
access server 1 of company B, the addressee (with an address from the
10.0.0.x network) will be searched within the own local network, and the in-
quiry even does not reach the gateway.
With the help of N:N mapping, all addresses of the LAN can be translated to
a new address range for the coupling with the other network. The network of
company A e. g. will be translated to 192.168.1.x, the network of company B
to 192.168.2.x. Under these new addresses the two LANs are now reachable
for the respective other network. The station from the network of company A
is now addressing server 1 of company B under the address 192.168.2.1.
The addressee does not reside any more within the own network, the inquiry
is now passed on to the gateway, and the routing to the other network is
working as desired.
U Remote monitoring and remote control of networks
Remote maintenance and control of networks become more and more impor-
tance because of the possibilities given by VPN. With the use of the nearly
ubiquitous broadband Internet connections, the administrator of such man-
agement scenarios is no longer dependent of the different data communica-
tion technologies or expensive leased lines.
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