Port Forwarding Configuration Page; Understanding Port Forwarding - Hughes HX200 Installation Manual

Port Forwarding
If an HX200 is connected to a system gateway that has NAPT
enabled, and the satellite router is configured at the system
Configuration page
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 40, where you can create port forwarding rules.
Figure 40: Port Forwarding Configuration page
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.
Chapter 5 • The System Control Center
67
1038054-0001 Revision A.04 - Inspection Draft