Siemens gigaset SE551 - Manual (Page 91)

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Configuring the Advanced Settings
Gigaset SE551 WLAN dsl/cable / deutsch / A31008-M1029-B101-1-19 / configure_router.fm / 25.10.2006
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When the Gigaset SE551 WLAN dsl/cable is supplied, the NAT function (Network Address
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 SE551 WLAN dsl/cable to
u set up port triggering for special applications (see page 90),
u set up the Gigaset SE551 WLAN dsl/cable as a virtual server by configuring Port For-
warding (see page 91),
u open the firewall for selected PCs (see page 92).
You can activate or deactivate the NAT function (default setting: NAT function is acti-
vated).
ì
In the Advanced Settings – Internet menu, select Address Translation (NAT) and
select the required option.
Please remember:
u An application that is configured for port triggering can only be run by one user in
the local network at a time.
u 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.
Please remember:
For the functions described below you must make sure 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 SE551 WLAN dsl/cable, you must select the option Never expires
(see page 97) for the settings on the Local Network screen for Lease time or assign
static IP addresses for the PCs.