Current File : //usr/share/help/C/gnome-help/net-firewall-on-off.page
<page xmlns="http://projectmallard.org/1.0/"
xmlns:its="http://www.w3.org/2005/11/its"
type="topic" style="task"
id="net-firewall-on-off">
<info>
<link type="guide" xref="net-security" group="#first"/>
<revision pkgversion="3.4.0" date="2012-02-20" status="final"/>
<revision pkgversion="3.10" date="2013-11-03" status="incomplete"/>
<revision pkgversion="3.18" date="2015-09-28" status="final"/>
<credit type="author">
<name>Paul W. Frields</name>
<email>stickster@gmail.com</email>
</credit>
<include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
<desc>You can control which programs can access the network. This helps to keep your computer secure.</desc>
</info>
<title>Enable or block firewall access</title>
<comment>
<cite date="2012-02-19">shaunm</cite>
<p>Continue to revisit this page until we can provide real instructions. As
it is, we're stuck in "whatever distros do" territory.</p>
</comment>
<comment>
<cite date="2013-11-03">Kat</cite>
<p>GNOME does not come with a firewall, this page needs to be revisited.</p>
</comment>
<p>GNOME does not come with a firewall, so for support beyond this document
check with your distribution’s support team or your organization’s IT department.
Your computer should be equipped with a <em>firewall</em> that allows it to
block programs from being accessed by other people on the internet or your
network. This helps to keep your computer secure.</p>
<p>Many applications can use your network connection. For instance, you can
share files or let someone view your desktop remotely when connected to a
network. Depending on how your computer is set up, you may need to adjust the
firewall to allow these services to work as intended.</p>
<p>Each program that provides network services uses a specific <em>network
port</em>. To enable other computers on the network to access a service, you
may need to “open” its assigned port on the firewall:</p>
<steps>
<item>
<p>Go to <gui>Activities</gui> in the top left corner of the screen and
start your firewall application. You may need to install a firewall
manager yourself if you can’t find one (for example, GUFW).</p>
</item>
<item>
<p>Open or disable the port for your network service, depending on
whether you want people to be able to access it or not. Which port you
need to change will <link xref="net-firewall-ports">depend on the
service</link>.</p>
</item>
<item>
<p>Save or apply the changes, following any additional instructions given
by the firewall tool.</p>
</item>
</steps>
</page>
Mini Shell