This function is used to open ports in your device and re-direct data through these ports to a single PC in your network (WAN-to-LAN traffic). It allows remote users to
access services in your LAN, such as FTP for file transfers or SMTP, and POP3 for e-mail. The device receives remote requests for these services at your public IP
address. It uses the specified TCP or UDP protocol and port, and redirects these requests to the server on your LAN with the specified LAN IP address. Note that the
specified private IP address must be within the available IP address range of the subnet where the device is in.
Choose
ADVANCED
>
Port Forwarding
. The page as shown in the figure appears:
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Click
Add
to add a virtual server. See the figure:
Select a service for a preset application or enter the name in the
Custom Server
field.
Enter an IP address in the
Server IP Address
field, to appoint the corresponding PC to
receive forwarded packets.
The port table displays the ports that you want to open on the device. The
Protocol
indicates the type of protocol used by each port.
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Port Triggering
Some applications require that specific ports in the firewall of the device are open for the remote parties to access. Application rules dynamically open the firewall ports
when an application on the LAN initiates a TCP/UDP connection to a remote party using the trigger ports. The device allows the remote party from the WAN side to
establish new connections back to the application on the LAN side using the firewall ports. A maximum of 32 entries can be configured.
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