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Enable 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 automatically
: 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.
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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.
DHCP query frequency
: Changes the DHCP Discovery
interval settings to avoid overloading the DHCP server.
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4.3.2 Dual WAN
Your ASUS wireless router provides dual WAN support. You can set
the dual WAN feature to any of these two modes:
Failover Mode:
Select this mode to use the secondary WAN as
the backup network access.
Load Balance Mode:
Select this mode to optimize bandwidth,
minimize response time and prevent data overload for both
primary and secondary WAN connections.
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4.3.3 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.
On the
Enable Port Trigger
field, tick
Yes
.
3.
On the
Well-Known Applications
field, select the popular
games and web services to add to the Port Trigger List.
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4.
On the
Trigger Port List
table, key in the following
information:
Description
: Enter a short name or description for the
service.
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.
5.
Click the
Add
to enter the port trigger information to the
list. Click the
Delete
button to remove a port trigger entry
from the list.
6.
When done, click
Apply
.
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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