Siemens SX541 WLAN dsl NAT, In the, Lease time, menu, select, Never expires, Local Network, and select the required option, uopen the firewall for selected PCs (see page 89)

Configuring the Advanced Settings

Please remember:

uAn application that is configured for port triggering can only be run by one user in the local network at a time.

uAs 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 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 SX541 WLAN dsl touset up port triggering for special applications (see page 87),

uset up the Gigaset SX541 WLAN dsl as a virtual server by configuring Port Forward- ing (see page 88),

uopen 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).

ìIn the Advanced Settings – Internet menu, select Address Translation (NAT) and select the required option.

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