Epson 3300 manual Public Port Range, Private Port Range, Use IP Alias

Protocol	Assign the transport layer protocol with TCP or UDP.
Public Port Range	Assign a port range from starting to end public port number.
	The port range is from 1 to 65535.
Private IP	Assign a local IP address to be transferred into.
Private Port Range	Assign a port range from starting to end private port number.
Use IP Alias	“Disable” option uses IP address of WAN interface, “Enable”
	option uses IP alias addresses.
WAN Interface	It is a pull-down window; user can select one specific WAN
	interface.
IP Alias	It is a pull-down window; user can select one specific IP
	address assigned in IP Alias group of WAN interfaces.

Click Apply to reboot the system and apply the settings.

Note: The port forwarding function could redirect the Internet traffic, which has the destination port within the public port range and has the same IP address as WAN Interface or IP Alias that you set. Please redirect only the ports that you have to forward rather than forward all ports. Otherwise, the intrinsic firewall type security of NAT facility will be affected.

By the way, user can click Delete to remove one current existed NAT entry in the Advanced – NAT – Port Redirection page and click Delete All to remove all entries.

56 Vigor3300 Series User’s Guide