NetComm YML-O-3G19W - Manual (Page 33)

YML-O-3G19W 3G WiFi Router User Guide
www.netcomm.com.au 33
NETCOMM LIBERTY™ SERIES - 3G WiFi Router
7.2 Network Address Translation (NAT)
7.2.1 Port Forwarding
Port Forwarding allows you to direct incoming traffic from the Internet side (identified by Protocol and External port) to the internal server
with a private IP address on the LAN side. The Internal port is required only if the external port needs to be converted to a different port
number used by the server on the LAN side. A maximum of 32 entries can be configured.
To add a Virtual Server, click the Add button. The following screen will display.
OPTION DESCRIPTION
Select a Service Select a predefined service to port forward. Or
Custom Server Create a custom server and enter a name for it.
Server IP Address Enter the IP address for the server.
External Port Start Enter the starting external port number (when you select Custom Server). When a
predefined service is selected the port ranges are automatically configured.
External Port End Enter the ending external port number (when you select Custom Server). When a
predefined service is selected the port ranges are automatically configured.
Protocol User can select from: TCP, TCP/UDP or UDP.
Internal Port Start Enter the internal port starting number (when you select Custom Server). When a
predefined service is selected the port ranges are automatically configured.
Internal Port End Enter the internal port ending number (when you select Custom Server). When a
predefined service is selected the port ranges are automatically configured.
7.2.2 Port Triggering
Some applications require specific ports in the Router’s firewall to be open for access by remote parties. Port Triggering opens up the
‘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.