30
<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 youself if you can't find one (for example, Firestarter or GUFW).</p>
30
<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>
33
33
<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>