Port Triggering - Comtrend Corporation VR-303 User Manual

Consult the table below for field and header descriptions.
Field/Header
Use Interface
Select a Service
Or
Custom Service
Server IP Address
Enable NAT
Loopback
External Port Start
External Port End
Protocol
Internal Port Start
Internal Port End
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.
Description
Select a WAN interface from the drop-down box.
User should select the service from the list.
Or
User can enter the name of their choice.
Enter the IP address for the server.
Allows local machines to access virtual server via WAN IP
Address
Enter the starting external port number (when you select
Custom Server). When a service is selected, the port ranges
are automatically configured.
Enter the ending external port number (when you select
Custom Server). When a service is selected, the port ranges
are automatically configured.
TCP, TCP/UDP, or UDP.
Enter the internal port starting number (when you select
Custom Server). When a service is selected the port ranges
are automatically configured
Enter the internal port ending number (when you select
Custom Server). When a service is selected, the port ranges
are automatically configured.
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