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Page 46 / 124 Scroll up to view Page 41 - 45
43
Port Forwarding and Port Triggering
Linksys EA-Series
43
How to set up port forwarding
Why would I use port forwarding?
Port forwarding is a feature that forwards
inbound traffic from the Internet on a specific port or ports to a specific device
or port on your local network. You can set up port forwarding for:
•
A single port (see “How to set up port forwarding for a single port” below)
•
Multiple ports (see “How to set up port forwarding for multiple ports” on
page 44)
•
A range of ports (see “How to set up port forwarding for a range of ports”
on page 44)
How to set up port forwarding for a single port
Why would I use port forwarding for a single port?
Single port forwarding
is a feature that forwards inbound traffic from the Internet on a specific port to
a single device on your local network. An example of single port forwarding
would be to forward inbound web requests, typically on port 80, to a web
server.
TIP
See the device’s documentation for port and protocol information.
To set up single port forwarding:
1.
Follow your device’s instructions for configuring it with a static IP address
or use DHCP reservation to assign it a permanent address (see “How to
set up the DHCP server on your router” on page 30).
2.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
3.
Under
Router Settings,
click
Security
.
4.
Click the
Apps and Gaming
tab.
5.
Click
Single Port Forwarding
. The
Single Port Forwarding
screen opens.
6.
Click
Add a new Single Port Forwarding
.
7.
In the
Application name
field, enter a descriptive name.
8.
In the
External Port
field, type the external port number (not always
required).
9.
In the
Internal Port
field, type the internal port number (not always
required).
10.
In the
Protocol
drop-down list, select
TCP
,
UDP
, or
Both
(default).
11.
In the
Device IP#
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.
12.
Select
Enabled
, then click
Save
. If you don’t want to use port forwarding
but want to keep the information in the table, unselect the checkbox.
Port Forwarding and Port Triggering
Page 47 / 124
44
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:
1.
Make sure that the software you want to use has been installed onto a
networked computer.
2.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
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 34).
4.
Under
Router Settings,
click
Security
.
5.
Click the
Apps and Gaming
tab.
6.
Click
Single Port Forwarding
. The
Single Port Forwarding
screen opens.
7.
Click
Add a new Single Port Forwarding
.
8.
In the
Application name
field, enter a descriptive name.
9.
Enter in the same port number for the
External Port
and the
Internal
Port
.
10.
In the
Protocol
drop-down list, select
TCP
,
UDP
, or
Both
(default).
11.
In the
Device IP#
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.
12.
Select
Enabled
, then click
Save
. If you don’t want to use port forwarding
but want to keep the information in the table, unselect the checkbox.
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.
Page 48 / 124
45
Port Forwarding and Port Triggering
Linksys EA-Series
To set up port range forwarding:
1.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
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 34). In this example, the IP address of the desktop
computer with BitTorrent installed is 192.168.1.140.
3.
Under
Router Settings,
click
Security
.
4.
Click the
Apps and Gaming
tab.
5.
Click
Port Range Forwarding
. The
Port Range Forwarding
screen opens.
6.
Click
Add a new Port Range Forwarding
.
7.
In the
Application name
field, enter a descriptive name.
8.
In the
Start ~ End Port
fields, enter the range or ports. In this example,
the range is
6881
to
6889
.
9.
Select
TCP
as the protocol.
10.
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
.
11.
Select
Enabled
, then click
Save
. If you don’t want to use port range
forwarding but want to keep the information in the table, unselect the
checkbox.
TIPS
To use software like BitTorrent on multiple computers on your
network, create additional entries with a unique range of ports as
shown above. BitTorrent works only 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
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:
1.
See your device documentation for information on the ports that the
device uses.
2.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
Page 49 / 124
46
Port Forwarding and Port Triggering
Linksys EA-Series
3.
Under
Router Settings,
click
Security
.
4.
Click the
Apps and Gaming
tab.
5.
Click
Port Range Triggering
. The
Port Range Triggering
screen opens.
6.
Click
Add a new Port Range Triggering
.
7.
In the
Device or Application
field, enter a descriptive name (such as
PS3 Headset
).
8.
For single ports, enter the same port number in each
Triggered range
and
Forwarded range
field.
9.
For port ranges, enter the same number ranges in each set of
Triggered
Range
and
Forwarded Range
fields.
10.
Select
Enabled
, then click
Save
. If you don’t want to use port range
triggering but want to keep the information in the table, unselect the
checkbox.
Page 50 / 124
47
Maintaining and Monitoring
Linksys EA-Series
47
How to back up and restore your router
configuration
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.
NOTE
You can only back up the router configuration locally (not
remotely).
To back up your router configuration:
1.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
2.
Under
Router Settings,
click
Troubleshooting
.
3.
Click the
Diagnostics
tab.
4.
Under
Router configuration
, click
Backup
. You are prompted to save the
file.
5.
Specify a file location, then click
Save
.
TIP
For save multiple backup files, include the backup date in the
filename as you save.
To restore your router configuration:
1.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
2.
Under
Router Settings,
click
Troubleshooting
.
3.
Click the
Diagnostics
tab.
4.
Under
Router
configuration
,
click
Restore
. The
Restore
Router
Configuration
dialog box opens.
5.
Click
Choose File
to navigate to the location of your configuration file,
then select the file and click
Open
.
6.
To restore the configuration, click
Start to Restore
.
Maintaining and Monitoring

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