User's Manual

Table Of Contents
43
Field/Header
Description
Use Interface
Select a WAN interface from the drop-down box.
Select a Service
Or
Custom Service
User should select the service from the list.
Or
User can enter the name of their choice.
Server IP Address
Enter the IP address for the server.
Enable NAT
Loopback
Allows local machines to access virtual server via WAN IP Address
External Port Start
Enter the starting external port number (when you select Custom
Service). When a service is selected, the port ranges are
automatically configured.
External Port End
Enter the ending external port number (when you select Custom
Service). When a service is selected, the port ranges are
automatically configured.
Protocol
TCP, TCP/UDP, or UDP.
Internal Port Start
Enter the internal port starting number (when you select Custom
Service). When a service is selected the port ranges are
automatically configured
Internal Port End
Enter the internal port ending number (when you select Custom
Service). When a service is selected, the port ranges are
automatically configured.
5.2.2 Port Triggering
Some applications require that specific ports in the firewall be opened for access by the remote
parties. Port Triggers dynamically 'Open Ports' in the firewall when an application on the LAN
initiates a TCP/UDP connection to a remote party using the 'Triggering Ports'. The Router allows
the remote party from the WAN side to establish new connections back to the application on the
LAN side using the 'Open Ports'. A maximum 32 entries can be configured.
To add a Trigger Port, click Add. The following will be displayed.