Siemens Gigaset SX541 WLAN dsl Manual page 88

Configuring the Advanced Settings
Please remember:
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An application that is configured for port triggering can only be run by one user in
the local network at a time.
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As long as the public ports are open, they can be used by unauthorised persons to
gain access to a PC in the local network.
When the Gigaset SX541 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 for the Gigaset SX541 WLAN dsl to
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set up port triggering for special applications (see page 87),
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set up the Gigaset SX541 WLAN dsl as a virtual server by configuring Port Forward-
ing (see page 88),
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open the firewall for selected PCs (see page 89).
Please remember:
You must make sure for the functions described below that the IP addresses of the
PCs do not change. If the IP addresses of the PCs are assigned via the DHCP server
of the Gigaset SX541 WLAN dsl, you must select the option Never expires
(see page 94) for the settings on the Local Network screen for Lease time or assign
static IP addresses for the PCs.
You can activate or deactivate the NAT function (default setting: NAT function is acti-
vated).
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In the Advanced Settings – Internet menu, select Address Translation (NAT) and
select the required option.
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NAT function (Network Address