Lancom Office Series, Manual

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Linking two networks
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LANCOM Office
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EN
6 Linking two networks
With the network interconnection (also known as LAN to LAN coupling) of the
LANCOM Office , two local networks are linked via ISDN. A setup wizard han-
dles the configuration of the connection in the usual convenient manner.
Always configure both sides
Both routers involved in the network interconnection must be configured.
Care must be taken to ensure that the configuration information provided
matches.
The following instructions will assume that LANCOM routers are being used
on both sides. A network interconnection may also be realized with routers
from other manufacturers. A mixed setup usually requires more extensive
configuration measures for both devices, however. Please refer to the LAN-
COM reference manual for more information in this regard.
Security aspects
You must, of course, protect your LAN against unauthorized access. A LAN-
COM Office therefore offers a whole range of security mechanisms that can
provide an outstanding level of protection:
•
Password-protected connections – simple and effective security.
•
Verification of the ISDN subscriber number – for additional security.
•
Callback function – for the highest security. Instruct the router to call
incoming callers back under their own numbers.
The callback function cannot be configured using the wizard. It can only be
set up in the expert configuration. For details, please see the LANCOM refer-
ence manual.
High-speed network links via DSL—VPN is the answer
To couple LANs using a fast DSL connection, you need the LANCOM VPN Option . This soft-
ware option enables your LANCOM DSL/I-1611 Office router as a fully-fledged VPN gate-
way. Two LANCOM routers with LANCOM VPN Option can be deployed to link LANs via the
Internet.
The setup and configuration of VPN connections are covered in the
LANCOM VPN Option