External Port: This is the external (WAN) port
number for server or Internet application, for
example, port 21 for ftp service.
Internal Port: This is the port number of LAN
computer set by the Router. The Internet traffic
from the external port will forward to the internal
port. For example: you can set the internal port
NO.66 to act as the external port NO.21 for ftp
service.
IP Address: Enter the IP address of the PC
where you want to set the applications.
Protocol: Select the protocol (TCP/UDP/Both) for
the application.
Delete/Enable: Click to check it for
corresponding operation.