Port Forwarding allows specific applications to be forwarded to a particular device connected to your network. Normally, the built-in firewall blocks incoming traffic from the internet. Port forwarding allows internet users to access any server you are running on your computer, such as a web, FTP, or Email server.
IMPORTANT: Port forwarding creates a security risk and should not be turned on unless it is required.
NOTE: To configure Port Forwarding, you need a static IP address assigned to your line of service. Contact your service provider to set up a line of service for static IP.
Some mobile networks provide you with an IP address on their own network rather than an internet IP address. In this case, Port Forwarding cannot be used, because internet users cannot reach your IP address.
NOTE: When IP Passthrough is turned on, port forwarding capabilities are set through the connected host routing system. Settings on this page are not available. Go to Advanced > LAN to turn IP Passthrough off.
Port forwarding: To turn on port forwarding, move the ON/OFF slider to ON. To turn off port forwarding, so that no inbound traffic is forwarded to a LAN client, move the slider to OFF.
Check the box next to each Port Forwarding application that you want to allow.
To forward all inbound WAN traffic on a specific port to a single LAN client, enter the IP address of the target device in the Application IP address field.
The following table provides port numbers and protocol information for each port forwarding application listed.
Application | Port | TCP* | STCP* | UDP* |
---|---|---|---|---|
DNS | 53 | Yes | No | Yes |
FTP control (command) | 21 | Yes | Yes | Assigned |
FTP data transfer | 20 | Yes | Yes | Assigned |
HTTP | 80 | Yes | Yes | Assigned |
HTTPS | 443 | Yes | Yes | Assigned |
NNTP | 119 | Yes | No | Assigned |
Email (POP3) | 110 | Yes | No | Assigned |
Email (POP3S) | 995 | Yes | No | Yes |
Email (SMTP) | 25 | Yes | No | Assigned |
Email (SecureSMTP) | 465 | Yes | No | No |
SNMP | 161 | Assigned | No | Yes |
Telnet | 23 | Yes | No | Assigned |
TFTP | 69 | Assigned | No | Yes |
*Yes - indicates the protocol is standardized for the port number.
No - indicates the protocol is not standardized for the port number.
Assigned - indicates the port number is assigned by IANA (Internet Assigned Numbers Authority) for protocol use but may not be standardized. |
Use the Add custom application button to add a new row to the custom application list. You can add up to ten custom applications. Once defined, these applications can be turned on and off the same way as pre-defined applications.
Click Save Changes to save any changes made to the custom applications.