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53
Port Forwarding and Port Triggering
Linksys EA-Series
How to set up port forwarding for multiple ports
Why would I set up port forwarding for multiple ports?
Port forwarding is
a feature that forwards inbound traffic from the Internet on a specific port to
a single device on your local network. Unlike a web camera that typically only
requires a single port to be forwarded, some applications require forwarding
of multiple ports.
VNC
(Virtual Network Computing) software that allows you to
operate your computer remotely from anywhere on the Internet is an example
of an application that requires multiple ports to be forwarded. To forward to
multiple ports, just create additional entries to forward additional ports to the
same IP address.
Example
: You want to set up your computer so you can remotely access it using
VNC software. By default, VNC uses TCP ports 5800 and 5900.
To set up single port forwarding for multiple ports:
Applications & Gaming > Single Port Forwarding
1.
Make sure that the software you want to use has been installed onto a
networked computer.
2.
Log into the browser-based utility (see “How to open the browser-based
utility” on page 20).
3.
Set up DHCP reservation for the IP address of the computer on which
you installed the software. (See “How to set up the DHCP server on your
router” on page 24).
4.
Click the
Applications & Gaming
tab, then click the
Single Port
Forwarding
page.
5.
For each entry, enter a descriptive name in the
Application Name
field.
6.
For each entry, enter in the same port number for the
External Port
and
the
Internal Port
.
7.
In the
To IP Address
field, enter the last three digits of the IP address you
have reserved for the computer you want to forward Internet traffic to.
The rest of the IP address has already been completed for you.
8.
Select
Enabled
next to the
IP Address
field.
9.
Click
Save Changes
at the bottom of the screen.
NOTE
If you want to use software such as VNC on multiple computers,
you will need to reconfigure the default ports that VNC uses on
each additional computer. Then, create additional port forwarding
entries for each additional computer. See your software’s
documentation for help.
How to set up port forwarding for a range of ports
Why would I set up port forwarding for a range of ports?
Port forwarding is
a feature that forwards inbound traffic from the Internet on a range of ports to
a single device on your local network. Unlike a web camera that typically only
requires a single port to be forwarded, some applications require forwarding
to a range of ports.
Example
: You want to set up your computer so you can use BitTorrent, a
popular peer-to-peer file sharing application. BitTorrent uses port 6881 by
default. If that port is busy, the requesting BitTorrent client tries the next port
in sequence. The most common configuration for home routers with a single
BitTorrent computer is to set up port forwarding using a range of ports starting
with 6881 and ending with port 6889.
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54
Port Forwarding and Port Triggering
Linksys EA-Series
To set up port range forwarding:
Applications & Gaming > Port Range Forwarding
1.
Log into the browser-based utility (see “How to open the browser-based
utility” on page 20).
2.
Set up a DHCP reservation for the IP address of the computer on which
you installed the software. (See “How to set up the DHCP server on
your router” on page 24). In this example, the IP address of the desktop
computer with BitTorrent installed is 192.168.1.140.
3.
Click the
Applications & Gaming
tab, then click the
Port Range
Forwarding
page.
4.
Enter a descriptive name, then enter the
Start Port
and the
End Port
values to specify the range. In this example, the range is 6881 to 6889.
5.
Select
TCP
as the protocol.
6.
In the
To IP Address
field, enter the last 3 digits of the IP address of the
device running the software. The rest of the IP address fields already
completed. In this example, you would enter 140.
7.
Select
Enabled
next to the
To IP Address
field.
8.
Click
Save Settings
at the bottom of the page.
NOTES:
To use software like BitTorrent on multiple computers on your
network, create additional entries with a unique range of ports as
shown above. BitTorrent only works with ports between 6881 and
6999.
Depending on your computer’s firewall software, you may need to
open a range of ports in your firewall to enable software that uses
port range forwarding
How to set up port range triggering for
online gaming
For
ALL
Why would I use port triggering instead of port forwarding?
Port range
triggering allows the router to watch outgoing data for specific port numbers.
The IP address of the computer that sends the matching data is remembered
by the router, so that when the requested data returns through the router,
the data is routed back to the proper computer. An example of port range
triggering would be to enable a USB or Bluetooth headset for online chat and
gaming.
To set up port range triggering for multiple entries:
Applications & Gaming > Port Range Triggering
1.
Log into the browser-based utility (see “How to open the browser-based
utility” on page 20).
2.
Click the
Applications & Gaming
tab, then click the
Port Range
Triggering
page.
3.
See your device documentation for information on the ports that the
device uses.
4.
For each entry in the
Port Range Forwarding
table:
Enter a descriptive name (such as
PS3 Headset
)
For single ports, enter the same port number in each
Triggered Range
and
Forwarded Range
box.
For port ranges, enter the same number ranges in each
Triggered
Range
and
Forwarded Range
column.
5.
Click
Save Settings
at the bottom of the page.
Page 58 / 71
55
Port Forwarding and Port Triggering
Linksys EA-Series
How to configure your Xbox for online
gaming
For
ALL
Why would I set up my Xbox for online gaming?
Online gaming adds another
dimension to using your Xbox. As with other online gaming applications and
gaming consoles, you need to forward multiple ports to use your Xbox for
online gaming. The procedure for setting up your Xbox is almost identical to
setting up multiple port forwarding for VNC remote control. (See “How to set
up port forwarding for multiple ports” on page 53).
NOTE
For more information on configuring your router for online gaming,
see “How to optimize your router for gaming and voice” on page 27.
Refer to your game console documentation to determine the ports used by
your device. The Xbox uses four ports:
TCP port 80
UDP port 88
TCP/UDP port 53
TCP/UDP port 3074
To set up an Xbox using multiple entries of single port forwarding:
Applications & Gaming > Single Port Forwarding
1.
Connect your Xbox 360 to your router.
1.
Log into the browser-based utility (see “How to open the browser-based
utility” on page 20).
2.
Set up a DHCP reservation for the IP address of the Xbox. (See “How to set
up the DHCP server on your router” on page 24).
– OR –
Refer to your game console’s documentation to set a static IP address for
your device.
3.
Click the
Applications & Gaming
tab, then click the
Single Port
Forwarding
page. The Xbox uses four ports, so create four port
forwarding entries on this page.
4.
Enter the port and protocol information as shown in the image below.
5.
In the
To IP Address
field, enter a 1- to 3-digit number that corresponds
to the last three digits of the IP Address of the Xbox 360. The rest of the IP
address is already completed.
6.
Select
Enabled
next to the
To IP Address
field for each entry.
7.
Click
Save Settings
at the bottom of the page.
Page 59 / 71
56
Maintaining and Monitoring
Linksys EA-Series
56
How to back up and restore your router
configuration
For
ALL
Why do I need to back up my router configuration?
As with any valuable
data, you should back up your router configuration. Your router might contain
many customized settings. Those settings would be lost if you reset your router
to its factory defaults, and you would need to re-enter all of them manually. If
you back up your router configuration, restoring settings is easy.
To back up your router configuration:
Administration > Management
1.
Log into the browser-based utility (see “How to open the browser-based
utility” on page 20).
2.
Click the
Administration
tab, then click the
Management
page.
3.
Click
Back Up Configurations
at the bottom of the screen.
You are prompted to save the file.
4.
Click
OK
or
Save
.
5.
Specify a file location, then click
Save
.
To restore your router configuration:
Administration > Management
1.
Log into the browser-based utility (see “How to open the browser-based
utility” on page 20).
2.
Click the
Administration
tab, then click the
Management
page.
3.
Click
Restore Configurations
at the bottom of the screen.
A separate window opens.
4.
Click
Browse
to navigate to the location of your configuration file, then
select the file and click
Open
.
5.
To restore the configuration, click
Start to Restore
.
How to restore factory defaults
Why would I need to restore to factory defaults?
If you are experiencing
difficulties with the router and have exhausted all other troubleshooting
measures, you may want to reset the router to factory defaults. Resetting the
router erases all of your settings, so you must restore the settings after. We
recommend that you back up your configuration before resetting your router
to factory defaults. See “How to back up and restore your router configuration”
on page 56.
You can use the Reset button or the router’s browser-based utility to restore
your router to factory defaults.
Maintaining and Monitoring
Page 60 / 71
57
Maintaining and Monitoring
Linksys EA-Series
To reset your router to factory defaults with the reset button:
CAUTION
Whenever you restart the router, all logs that are not saved will be
lost.
1.
With your router connected to power and turned on, press and hold the
Reset
button on the bottom of your router for 5-15 seconds.
EA2700 and EA3500 Reset Button
EA4500 Reset Button
To reset your router to factory defaults using the browser-based utility:
Administration > Factory Defaults
1.
Log into the browser-based utility (see “How to open the browser-based
utility” on page 20).
2.
Click the
Administration
tab, then click the
Factory Defaults
page.
3.
Click
Restore Factory Defaults
.
A confirmation window opens.
4.
Click
OK
.
How to upgrade the router’s firmware
For
ALL
Why would I need to upgrade my router’s firmware?
Linksys may periodically
publish a firmware upgrade either to fix a problem or to add features to your
router.
IMPORTANT
Do not interrupt the upgrade process. You should not turn off the
router or press the Reset button during the upgrade. Doing so may
permanently disable the router.
If you are upgrading from a laptop computer, make sure that the
laptop is connected to a power source or that the battery is fully
charged.
Disable your computer’s Sleep mode. It might interrupt the
upgrade process.
If you are upgrading from a computer with a wireless network
connection, make sure that you have strong wireless signal
strength. If not, move your computer closer to your router.
TIPS
Each time you run Cisco Connect, it checks for software updates
and installs them, if available. Use the following instructions only if
you don’t run Cisco Connect.

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