
forwarding sets up public services on your network, such as web servers, ftp servers, or e-mail servers. when users send this type of request to your network via the internet, the router will forward those requests to the appropriate pc. before using forwarding, the router's dhcp function must be disabled under the dhcp tab and the router must be assigned a new static lan ip address because the ip address may change when using the dhcp server.
if you need to forward all ports for one pc, see the section on dmz hosting.
to add a server using forwarding:
1. enter the port number or range of ports used by the server. on the same line, select the protocol udp, tcp, or both, and enter the lan ip address of the server that you want the internet user to access.
2. configure as many entries as needed—the router supports up to 10 ranges of ports. click the apply button and continue button when finished.
using port triggering

port triggering allows the router to watch outgoing data for specific port numbers. the ip address of the computer that sends the matching data is remembered by the router, so that when the requested data returns through the firewall, the data is pulled back to the proper computer by way of ip address and port mapping rules.
1. enter the application name of the trigger.
2. enter the trigger port range used by the application.
3. enter the incoming port range used by the application.
4. click the apply button and continue button to finish.