Edimax Technology Wireless VPN Broadband Router user manual Port Forwarding

2.6.2 Virtual Server	You can have different services (e.g. email,
	FTP, Web etc.) going to different service
	servers/clients in your LAN. The Virtual
	Server allows you to re-direct a particular
	service port number (from the Internet/WAN
	Port) to a particular LAN IP address and its
	service port number.
2.6.3 Special Applications	Some applications require multiple
	connections, such as Internet games, video
	conferencing, Internet telephony and others.
	In this section you can configure the router to
	support these types of applications.
2.6.4 UPnP Setting	It allows to Enable or Disable UPnP feature
	here. After you enable the UPnP feature, all
	client systems that support UPnP, like
	Windows XP, can discover this router
	automatically and access the Internet through
	this router without any configuration. The NAT
	Traversal function provided by UPnP can let
	applications that support UPnP smoothly
	connect to Internet sites without any
	incompatibility problem due to the NAPT port
	translation.
2.6.5 ALG Setting	You can select special applications that need
	“Application Layer Gateway” to support here.
2.6.6 Static Routing	You can disable NAT function and setup the
	routing rules manually.

Click on one of the three NAT selections and proceed to the manual's relevant sub-section.

2.6.1 Port Forwarding

The Port Forwarding allows you to re-direct a particular range of service port numbers (from the Internet/WAN Ports) to a particular LAN IP address. It help you to host some servers behind the router NAT firewall.

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