Asus WL-330N3G - Manual (Page 54)

4-28 Chapter 4: Configuration
Virtual Server
Virtual Server allows you to make services, like WWW, FTP, provided by a server in
your local network accessible for outside users.
Port Trigger
This function allows you to open certain TCP or UDP ports to communicate with
the computers connected to the ASUS WL-330N3G. This is done by defining
trigger ports and incoming ports. When the trigger port is detected, the inbound
packets to the specified incoming port numbers are redirected to your computer.