D-Link DSL-G2452GR User Manual page 112

Section 4 - Configuration
Public Network Settings
Remote IP Enter the IP address of the server from the external
network.
Public port Specify the start and the end value for the port range.
If you only need to specify one port, enter the needed
value in the Public port (begin) field and leave the
Public port (end) field blank.
General Settings
Private IP The IP address of the server from the local area
network. To choose a device connected to the
router's LAN at the moment, select the relevant value
from the drop-down list (the field will be filled in
automatically).
Private port
Specify the start and the end value for the port range.
If you need to specify one port, enter the needed
value in the Private port (start) field and leave the
Private port (end) field blank.
D-Link DSL-G2452GR User Manual 108