Port Forwarding - Siemens Gigaset SE361 WLAN User Manual

Configuring the Advanced Settings

Port forwarding

If you configure port forwarding, the Gigaset SE361 WLAN outwardly assumes the role
of the server. It receives requests from remote users under its public IP address and
automatically redirects them to local PCs. The private IP addresses of the servers on the
local network remain protected.
Internet services are addressed via defined port numbers. The Gigaset SE361 WLAN
needs a mapping table of the port numbers to redirect the service requests to the server
that actually provides the service. For this, Port Forwarding has to be configured.
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To set up port forwarding for a service, select Port Forwarding in the Address
Translation (NAT) menu.
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Select the required application from the Predefined applications list.
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Click on the Add button. The data for the required service is entered on the screen.
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Select the option in the Enabled column.
If the application you require is not in the list, you must enter the relevant data on the
screen manually:
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Select the protocol for the service you are providing from the Protocol list.
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Under Public port, enter the port number of the service you are providing.
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In the Local port field, enter the internal port number to which service requests are
to be forwarded.
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In the Local IP address field, enter the IP address of the PC which provides the serv-
ice.
Example: The Web server has been configured to react to requests on port 8080.
However, requests from websites enter by port 80 (default setting). If you add the
PC to the forwarding table and define port 80 as the public port and port 8080 as an
internal port, all requests from the Internet are diverted to the service with port
number 80 on the Web server of the PC you have defined with port 8080.
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