Product specifications

11N Wireless Broadband Router
73
 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