
Chapter Six: Security Remote management
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To create a static NAT mapping
1.
On the Manual Configuration menu, click IP.
2.
On the IP menu, click NAT Static Mappings.
3.
For each server that you want to define, specify the following parameters:
•
Protocol:
Select the protocol that remote computers will use to access the server.
•
Server port:
Enter the port number that the protocol will use on the server.
•
Server address:
Enter the IP address of the computer that will act as the server. The server address
must be on the same LAN as the DIVA LAN ISDN Modem (or must be reachable via the LAN).
4.
Click Save.
5.
Click Reset.
Remote management
By default, the DIVA LAN ISDN Modem does not allow remote devices to access its configuration interfaces
via the ISDN link. This prevents unauthorized tampering when the DIVA LAN ISDN Modem has dialed out
and is connected to the Internet or a remote corporate network.
To accomplish this security, all incoming HTTP and Telnet traffic on the ISDN line is automatically dropped.
This effectively blocks remote computers from using the web-based interface, as well as the CLI (via Telnet).
This does not affect traffic on the local LAN created by the DIVA LAN ISDN Modem. Therefore, if the local
LAN is connected to other networks, these computers will have access to the DIVA LAN ISDN Modem.
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