Specifications
77
Setting up NAT
CE 450 IP R / IM-Ost english / A31008-M1817-R601_1-7619 / web_server.fm / 02.03.2007
Version 2, 21.12.2006
Port Mapping
Port mapping is essentially an automatic form of port forwarding. It involves ports being
released on the router for a PC in the local network, and the PC "manages" these ports itself.
The router allows messages received by these ports through in both directions.
¤ Open the following Web page: Router Settings ¢ Internet ¢ Address Translation (NAT)
¢ Port Mapping.
Precondition: NAT is activated.
¤ In the Server IP fields, enter the local IP address for the PC in the local network.
¤ Enter a port, a port area (e.g. 2345 - 2678) and/or a series of ports (6006, 8005) in Port
Mappings.
Example of an entry in Port Mappings: 2345 - 2678, 6006, 8005
¤ Click Add.
¤ Repeat the previous step if necessary.
¤ Click Set to apply the settings.
Exposed Host
If NAT is activated, you can set up a PC in your local network as an exposed host. Your router
will then forward all incoming data traffic from the Internet to this client. You can then, for
example, operate your own Web server on one of the PCs in your local network and make
it accessible to Internet users.
Please note: Exposed host means that your local PC is directly visible on the Internet, and
is therefore exposed to particular dangers (e.g. from hacker attacks). You should only acti-
vate this function if absolutely necessary (e.g. to operate a Web server) and if other func-
tions (e.g. port forwarding) are not adequate. In this case you should take appropriate
measures on the clients concerned.
¤ Open the following Web page: Router Settings ¢ Internet ¢ Address Translation (NAT)
¢ Exposed Host.
¤ Highlight On or Off in the Exposed Host field.
¤ If you activate the function, enter the local IP address for the PC that you want to release
as exposed host in the Local IP Address field.
¤ Click Set to apply the settings.
Please note:
– Deactivate the Enabled field to temporarily deactivate the settings for a PC.
– Click Delete to remove a PC from the list.