Chapter 2. Safeguarding Your Network
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N150 Wireless Router WGR614v11 User Manual
Understanding Your Firewall
Your N150 Wireless Router Model WGR614v11 contains a true firewall to protect your
network from attacks and intrusions. A firewall is a device that protects one network from
another while allowing communication between the two. Using a process called Stateful
Packet Inspection, the firewall analyzes all inbound and outbound traffic to determine
whether or not it will be allowed to pass through.
By default, the firewall allows any outbound traffic and prohibits any inbound traffic except for
responses to your outbound traffic. However, you can modify the firewall’s rules to achieve
the following behavior:
•
Blocking sites
. Block access from your network to certain Web locations based on Web
addresses and Web address keywords. This feature is described in
Blocking Access to
Internet Sites
on page
41.
•
Blocking services
. Block the use of certain Internet services by specific computers on
your network. This feature is described in
Blocking Access to Internet Services
on
page
42.
•
Scheduled blocking
. Block sites and services according to a daily schedule. This
feature is described in
Scheduling Blocking
on page
43.
•
Allow inbound access to your server
. To allow inbound access to resources on your
local network (for example, a Web server or remote desktop program), you can open the
needed services by configuring port forwarding as described in
Allowing Inbound
Connections to Your Network
on page
59.
•
Allow certain games and applications to function correctly
. Some games and
applications need to allow additional inbound traffic in order to function. Port triggering
can dynamically allow additional service connections, as described in
Configuring Port
Triggering
on page
65. Another feature to solve application conflicts with the firewall is
Universal Plug and Play (UPnP), described in
Using Universal Plug and Play
on page
68.
