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Page 31 / 124 Scroll up to view Page 26 - 30
28
Setting Up: Advanced
Linksys EA-Series
Example
: Because each MAC filtering configuration is unique, the following
procedure uses the simplified example of setting up MAC filtering to allow one
wireless device access to the network.
TIP
You can also use MAC filtering to prevent specific PCs from
accessing your network by selecting
Deny
. However, it’s easier
to select
Allow
to permit only known devices than to exclude
unknown devices.
To set up MAC filtering to allow one wireless device access to your
network:
1.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
2.
Under
Router Settings
, click
Wireless
. The Wireless page opens.
3.
Click the
MAC Filtering
tab.
4.
Select
Enabled
next to
MAC Filters
, then select
Allow access for ONLY
the listed MAC addresses
.
5.
Click
Add MAC Address
, then enter the MAC address into the
MAC Filter
List
and click
Save
.
Page 32 / 124
29
Setting Up: Advanced
Linksys EA-Series
How to improve security using the built-in firewall
Why would I need to change my security settings?
By default, the firewall
settings in your router have been optimized for most home environments, so
no changes are needed. The
SPI
(Stateful Packet Inspection) firewall is enabled
by default. In addition, anonymous Internet requests and IDENT requests are
filtered by default. All web filters are disabled, because enabling them may
cause problems for sites that depend on ActiveX controls, Java, or cookies.
Changing firewall settings
To change your firewall settings:
1.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
2.
Under
Router Settings
, click
Security
. The
Security
page opens to the
Firewall
tab.
3.
You can now change the following settings:
TIP
For more descriptions of each setting, click
Help
at the top of the
screen.
•
Firewall: SPI firewall protection
—This helps protect your local
network from Internet threats. This option is enabled by default.
On some router models, this setting is separated into IPv6 and IPv4
options so that each can be handled separately.
CAUTION
To help protect your network, you should keep this option enabled.
•
VPN Passthrough:
•
IPSec Passthrough
–
IPSec
(Internet Protocol Security) is a suite of
protocols used to implement secure exchange of packets at the IP
layer. The VPN clients on the local network can establish an IPSec
VPN tunnel through the router. This option is enabled by default.
•
PPTP Passthrough
–
PPTP
(Point-to-Point Tunneling Protocol)
allows the
PPP
(Point-to-Point Protocol) to be tunneled through
an IP network. The VPN clients on the local network can establish
a PPTP VPN tunnel through the router. This option is enabled by
default.
•
L2TP Passthrough
–
L2TP
(Layer 2 Tunneling Protocol) enables
point-to-point sessions using the Internet on the Layer 2 level.
The VPN clients on the local network can establish an L2TP VPN
tunnel through the router. This option is enabled by default.
•
Internet filters:
•
Filter anonymous Internet requests
—This filter blocks Internet
requests from unknown sources such as ping requests. This option
is enabled by default.
•
Filter multicast
—Multicasting allows a single transmission
to simultaneously reach specific recipients within your local
network. Select this option to block multicasting. This option is
disabled by default.
•
Filter Internet NAT redirection
—This filter prevents a local
computer from using a URL or Internet IP address to access the
local server. Select this option to enable the filter. This option is
disabled by default. On some router models, this setting applies
to IPv4 Internet only.
•
Filter ident (Port 133)
—This filter prevents port 133 from being
scanned by devices from the Internet. This option is enabled by
default.
4.
Click
Save
to save your changes.
Page 33 / 124
30
Setting Up: Advanced
Linksys EA-Series
Changing IPv6 firewall settings
On some router models, the IPv6 firewall lets you customize IPv6 port services
for applications. When users send these types of requests to your network via
the Internet, the router will allow those requests to the appropriate computers.
NOTE
To use your router’s IPv6 Internet connectino settings, IPv6 service
from your ISP (Internet service provider) is required. For more
information on this service, ask your ISP.
To set IPv6 firewall settings:
1.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
2.
Under
Router Settings
, click
Security
. The
Security
page opens to the
Firewall
tab.
3.
Click Add IPv6 Firewall Setting. You can now change the following fields:
•
Description
—Enter a description of the application.
•
Protocol
—Select
TCP
,
UDP
, or
Both
(default).
•
IPv6 Address
—Enter the IPv6 address of the computer that should
receive the traffic.
•
Allow
—Select the range of port(s) used by incoming traffic.
4.
Click
Save
to save your changes. The list is updated to show the settings
you have saved.
•
To change a saved setting, click
Edit
next to the setting.
•
To delete a saved setting, click
Remove
next to the setting.
How to set up the DHCP server on your
router
Your router can be used as a
DHCP
(Dynamic Host Configuration Protocol)
server to automatically assign an IP address to each computer or device on
your network. The DHCP server is enabled by default. If you already have a
DHCP server on your network, or if you do not want to use your router as a
DHCP server, you should disable this setting.
To configure your router’s DHCP server settings:
1.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
2.
Under
Router Settings
, click
Connectivity
.
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31
Setting Up: Advanced
Linksys EA-Series
3.
Click the
Local Network
tab.
4.
To disable the DHCP server, deselect the
Enabled
checkbox.
5.
Leave the
Enabled
checkbox selected to edit the following settings:
•
Start IP address
•
Maximum number of users
•
IP address range (not editable)
•
Client lease time
•
Static DNS values
•
WINS
6.
Click
OK
to save changes.
How to set up DHCP reservation
Why would I use it?
DHCP reservation
allows you to assign a unique, fixed IP
address to a specific device on your network. Assigning a fixed IP address is
a good way to manage devices such as print servers, web cameras, network
printers, and game consoles. A fixed IP address is also recommended if you
want to use port forwarding for devices that need to receive inbound traffic
from the Internet (“How to set up port forwarding” on page 43).
To configure DHCP reservation:
1.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
2.
Under
Router Settings
, click
Connectivity
.
3.
Click the
Local Network
tab, then click
DHCP Reservations
. The
DHCP
Reservations
list opens, which lists attached network devices and current
DHCP reservations.
4.
Click the
Select
checkbox next to the device you want to reserve, then
click
Add DHCP Reservation
.
Page 35 / 124
32
Setting Up: Advanced
Linksys EA-Series
5.
Click
Edit
to change the reservation details, or click
Delete
to delete the
reservation.
TIP
For field descriptions, click
Help
at the top of the screen.
How to access your network on the
Internet
Why would I need to find my network on the Internet?
If you want to
remotely access a drive attached to your router or view a web camera on your
home network, you need to be able to easily enter your network’s address into
a web browser.
Working with several DDNS (Dynamic Domain Name System) service providers,
your router’s DDNS feature lets you configure a domain name for your network,
which you can then use to easily find your network on the Internet. If your ISP
changes your network’s IP address (which can happen frequently), the DDNS
service providers detect the address change and continue to route your
domain name to that address.
TIP
Before you configure DDNS on your router, you must sign up for
DDNS service from a DDNS service provider that’s supported by
your router.
To set up DDNS:
1.
Sign up for DDNS service at either
www.dyndns.org
or
www.tzo.com
.
Note all of the information provided to you by the DDNS provider.
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,
then click the
Apps and Gaming
tab. The DDNS screen opens.
4.
In the DDNS Service drop-down list (the list that has
Disabled
selected
by default), select your DDNS service provider.
5.
Complete the fields with information provided by your DDNS provider,
then click
OK
.
6.
To access the network from the Internet, enter the domain name
provided by the DDNS service provider.
To access one of your network devices on the Internet:
a.
Configure the router to use port forwarding for the device (see “How
to set up port forwarding for a single port” on page 43). Note the port
number used for the device.
b.
Enter the domain name for your network, followed by a colon and
the port number. For example, if the domain name registered with
your DDNS provider is
HappyBunny.linksysnet.com
, and your Internet
camera has been configured to use port 1024, you would enter:
HappyBunny.linksysnet.com:1024

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