Siemens GIGASET SX762 WLAN DSL Manual page 60

Configuring Advanced Settings
directs it to the appropriate PC. A trigger event always comes from a PC within the
local network. If a trigger port is addressed from outside, the router simply ignores it.
Note:
An application that is configured for port triggering can only be run by one user in
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the local network at a time.
As long as the public ports are open, they can be used by unauthorised persons to
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gain access to a PC in the local network.
When the Gigaset SX762 WLAN dsl is supplied, the
Translation) is activated, i.e. all IP addresses of PCs in the local network are converted to
the router's public IP address when accessing the Internet.
You can use the NAT settings to configure the Gigaset SX762 WLAN dsl to carry out the
following tasks:
Set up the Gigaset SX762 WLAN dsl as a virtual server by configuring Port Forward-
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ing (page 59),
Open the firewall for selected PCs (page 60).
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Note:
For the functions described below, the IP addresses of the PCs must remain
unchanged. If the IP addresses of the PCs are assigned via the DHCP server of the
Gigaset SX762 WLAN dsl, you must select Never expires (page 65) as the setting in
the Local Network menu entry for the Lease time or assign static IP addresses for the
PCs.
You can activate or deactivate the NAT function (by default the NAT function is acti-
vated).
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In the Advanced Settings – Internet menu, select Address Translation (NAT) and
then select the required option.
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NAT function (Network Address