The NAT Networks tab in Network Manager lists all NAT networks that are currently in use.
Click Create to add a new NAT network to the list.
Click Remove to remove a NAT network from the list.
Click Properties to show or hide settings for the selected NAT network.
To configure a NAT network, select the network name in the Name field and do the following:
Use the General Options tab to configure the network settings used by the NAT network. For example, the network address and mask of the NAT service interface.
Use the Port Forwarding tab to configure port forwarding rules used by the NAT network.