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文件: /usr/share/help/kn/gnome-help/net-firewall-on-off.page
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<?xml version="1.0" encoding="utf-8"?> <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" xml:lang="kn"> <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 xmlns="http://www.w3.org/2001/XInclude" href="legal.xml"/> <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> <p>Your system 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, Firestarter or 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>
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