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LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN
̈ Chapter 5: Linking two networks
47
EN
The ISDN call back function cannot be configured using the wizard. It
can only be set up in the expert configuration. For details, please see
the reference manual.
5.1 What information is necessary?
The wizard will prompt you for the necessary information on a step-by-step
basis. If possible, however, you should have it available before launching the
wizard.
To explain the significance of the information requested by the wizard, we will
be using a typical deployment as an example: setting up a link between a
branch office and its headquarters. The routers involved are named
'HEAD_OFFICE' and 'BRANCH'.
Please refer to the following tables for the entries to be made for each of the
routers. Arrows mark the dependencies between the entries.
5.1.1 General information
The following details are required for the installation of LAN to LAN couplings.
The first column indicates, whether the information is required for network
couplings over VPN (standard method using “preshared keys“) and/or ISDN.
Further details to network couplings via VPN using enhanced methods
can be found in the LCOS reference manual.
Coupling Entry Gateway 1 Gateway 2
VPN ISDN connection available? yes/no yes/no
VPN Type of the local IP address static/dynamic static/dynamic
VPN Type of the remote IP address static/dynamic static/dynamic
VPN + ISDN Name of the local device 'HEAD' 'BRANCH'
VPN + ISDN Name of the remote station 'BRANCH' 'HEAD'
VPN + ISDN Remote ISDN calling number (0123) 123456 (0789) 654321
VPN + ISDN Remote ISDN caller ID (0789) 654321 (0123) 123456
VPN + ISDN Password for secure transmission of the IP
address
'Password' 'Password'
VPN Shared secret for encryption 'Secret' 'Secret'