Hughes HX200, Installation Manual, Page: 95 / 160

Chapter 5 • The System Control Center
1038054-0001 Revision B
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Port Forwarding
Configuration page
If an HX200 is connected to a system gateway that has NAPT
enabled, and the satellite router is configured at the system
gateway to allow local port forwarding control, a
Port
Forwarding Configuration link will appear in the navigation
area on the left side of the System Control Center page. Clicking
the link opens the Port Forwarding Configuration page shown in
Figure 54, where you can create port forwarding rules.
Understanding port forwarding
NAPT, also called port address translation , or PAT , assigns
private (non-routable) Internet addresses to computers on the
LAN connected to the HX200. The HX200 IP address is used as
the source address for all network traffic coming from the remote
LAN, thus making it impossible for computers on the enterprise
network behind the system gateway to directly address packets
to, and communicate directly with, computers on the remote
LAN.
The port forwarding feature provides a means for this
communication to occur by mapping a port number to the IP
address of a computer on the remote LAN. Computers behind the
system gateway can address traffic to the HX200 IP address and
this port number and the traffic will be forwarded to the IP
address on the remote LAN associated with the port number.
Figure 54: Port Forwarding Configuration page