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ENHWI-2AN3 User’s Manual
Encore Electronics Inc.
Tel – (626) 336-4567
Fax – (626) 336-2345
Web Site – www.encore-usa.com
71
ADVANCED
- Network Address Translation (NAT)
Network Address Translation (NAT) allows multiple users at your local LAN site
to access the Internet using a single Public IP Address or multiple Public IP
Addresses. NAT provides Firewall protection from hacker attacks and has the
flexibility to allow you to map Private IP Addresses to Public IP Addresses for key
services such as Websites and FTP. Select Disable to disable the NAT function.
- Port Mapping
Port Mapping allows you to re-direct a particular range of service port numbers
(from the Internet / WAN Port) to a particular LAN IP address. It helps you to host
servers behind the router NAT firewall.
Page 72 / 108
ENHWI-2AN3 User’s Manual
Encore Electronics Inc.
Tel – (626) 336-4567
Fax – (626) 336-2345
Web Site – www.encore-usa.com
72
Enable Port
Mapping:
Enable or disable port mapping function.
Description:
description of this setting.
Local IP:
This is the local IP of the server behind the NAT firewall.
Protocol:
This is the protocol type to be forwarded. You can choose to forward
“
TCP
” or “
UDP
” packets only, or select “
BOTH
” to forward both “
TCP
” and
“
UDP
” packets.
Port Range:
The range of ports to be forward to the private IP.
Add Port Mapping
Page 73 / 108
ENHWI-2AN3 User’s Manual
Encore Electronics Inc.
Tel – (626) 336-4567
Fax – (626) 336-2345
Web Site – www.encore-usa.com
73
Fill in the "
Local IP
", “
Protocol
”, “
Port Range
” and "
Description
" of the setting to
be added and then click "
Add
". Then this Port Mapping setting will be added into the
"
Current Port Mapping Table
" below. If you find any typo before adding it and want
to retype again, just click
<Reset>
and the fields will be cleared.
Remove Port Mapping
If you want to remove a Port Mapping setting from the "
Current Port Mapping
Table
", select the Port Mapping setting that you want to remove in the table and then
click
D<Delete Selected>
. If you want to remove all Port Mapping settings from the
table, click
<Delete All>
button. Click
<Reset>
will clear your current selections.
Click <
Apply
> at the bottom of the screen to save the above configurations.
-
Port Forwarding (Virtual Server)
Use the Port Forwarding (Virtual Server) function when you want different
servers/clients in your LAN to handle different service/Internet application type (e.g.
Email, FTP, Web server etc.) from the Internet. Computers use numbers called port
numbers to recognize a particular service/Internet application type. The Virtual
Server allows you to re-direct a particular service port number (from the
Internet/WAN Port) to a particular LAN private IP address (See Glossary for an
explanation on Port number).
Page 74 / 108
ENHWI-2AN3 User’s Manual
Encore Electronics Inc.
Tel – (626) 336-4567
Fax – (626) 336-2345
Web Site – www.encore-usa.com
74
Enable Port Forwarding:
Enable or disable Port Forwarding.
Description:
The description of this setting.
Local IP / Local Port:
This is the LAN Client/Host IP address and Port number
that the Public Port number packet will be sent to.
Protocol:
Select the port number protocol type (TCP, UDP or both). If you are
unsure, then leave it to the default “both” setting. Public Port enters the
service (service/Internet application) port number from the Internet that will be
re-directed to the above Private IP address host in your LAN Network.
Public Port:
Port number will be changed to Local Port when the packet enters
your LAN Network.
Page 75 / 108
ENHWI-2AN3 User’s Manual
Encore Electronics Inc.
Tel – (626) 336-4567
Fax – (626) 336-2345
Web Site – www.encore-usa.com
75
Add Port Forwarding
Fill in the "
Description
" , "
Local IP
", "
Local Port
", "
Protocol
" and “
Public Port
”
of the setting to be added and then click
<Add>
button. Then this Virtual
Server setting will be added into the "
Current Port Forwarding Table
"
below. If you find any typo before adding it and want to retype again, just
click
<Reset>
and the fields will be cleared.
Remove Port Forwarding
If you want to remove Port Forwarding settings from the "
Current Port
Forwarding Table
", select the Port Forwarding settings you want to
remove in the table and then click "
Delete Selected
". If you want to remove
all Port Forwarding settings from the table, just click the
<Delete All>
button. Click
<Reset>
will clear your current selections.
Click <
Apply
> at the bottom of the screen to save the above configurations.
- Port Triggering (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 multiple connections for these types of applications.

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