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E
nable NAT
: NAT (Network Address Translation) is a system
where one public IP (WAN IP) is used to provide Internet
access to network clients with a private IP address in a LAN.
The private IP address of each network client is saved in a NAT
table and is used to route incoming data packets.
Enable UPnP
: UPnP (Universal Plug and Play) allows several
devices (such as routers, televisions, stereo systems, game
consoles, and cellular phone), to be controlled via an IP-based
network with or without a central control through a gateway.
UPnP connects PCs of all form factors, providing a seamless
network for remote configuration and data transfer. Using
UPnP, a new network device is discovered automatically.
Once connected to the network, devices can be remotely
configured to support P2P applications, interactive gaming,
video conferencing, and web or proxy servers. Unlike Port
forwarding, which involves manually configuring port
settings, UPnP automatically configures the router to accept
incoming connections and direct requests to a specific PC on
the local network.
Connect to DNS Server
: Allows this router to get the DNS
IP address from the ISP automatically. A DNS is a host on
the Internet that translates Internet names to numeric IP
addresses.
Authentication
: This item may be specified by some ISPs.
Check with your ISP and fill them in if required.
Host Name
: This field allows you to provide a host name for
your router. It is usually a special requirement from your ISP.
If your ISP assigned a host name to your computer, enter the
host name here.
•
•
•
•
•
Page 67 / 130
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MAC Address
: MAC (Media Access Control) address is a
unique identifier for your networking device. Some ISPs
monitor the MAC address of networking devices that connect
to their service and reject any unrecognized device that
attempt to connect. To avoid connection issues due to an
unregistered MAC address, you can:
• Contact your ISP and update the MAC address associated
with your ISP service.
•
Clone or change the MAC address of the ASUS wireless router
to match the MAC address of the previous networking device
recognized by the ISP.
•
Page 68 / 130
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4.3.2 Port Trigger
Port range triggering opens a predetermined incoming port for a
limited period of time whenever a client on the local area network
makes an outgoing connection to a specified port. Port triggering
is used in the following scenarios:
More than one local client needs port forwarding for the
same application at a different time.
An application requires specific incoming ports that are
different from the outgoing ports.
•
•
To set up Port Trigger:
1. From the navigation panel, go to
Advanced Settings
>
WAN
>
Port Trigger
tab.
2. Configure the following settings below. When done, click
Apply
.
Enable Port Trigger
: Choose
Yes
to enable Port Trigger.
Well-Known Applications
: Select popular games and web
services to add to the Port Trigger List.
Description
: Enter a short name or description for the service.
•
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Trigger Port
: Specify a trigger port to open the incoming port.
Protocol
: Select the protocol, TCP, or UDP.
Incoming Port
: Specify an incoming port to receive inbound
data from the Internet.
Protocol
: Select the protocol, TCP, or UDP.
NOTES:
•
When connecting to an IRC server, a client PC makes an outgoing
connection using the trigger port range 66660-7000. The IRC server
responds by verifying the username and creating a new connection
to the client PC using an incoming port.
•
If Port Trigger is disabled, the router drops the connection because
it is unable to determine which PC is requesting for IRC access.
When Port Trigger is enabled, the router assigns an incoming port to
receive the inbound data. This incoming port closes once a specific
time period has elapsed because the router is unsure when the
application has been terminated.
•
Port triggering only allows one client in the network to use a
particular service and a specific incoming port at the same time.
•
You cannot use the same application to trigger a port in more than
one PC at the same time. The router will only forward the port back
to the last computer to send the router a request/trigger.
•
•
•
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Page 70 / 130
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4.3.3 Virtual Server/Port Forwarding
Port forwarding is a method to direct network traffic from the
Internet to a specific port or a specific range of ports to a device
or number of devices on your local network. Setting up Port
Forwarding on your router allows PCs outside the network to
access specific services provided by a PC in your network.
NOTE:
When port forwarding is enabled, the ASUS router blocks
unsolicited inbound traffic from the Internet and only allows replies
from outbound requests from the LAN. The network client does not
have access to the Internet directly, and vice versa.
To set up Port Forwarding:
1. From the navigation panel, go to
Advanced Settings
>
WAN
>
Virtual Server / Port Forwarding
tab.

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