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+<?xml version='1.0' encoding='utf-8'?><section xmlns="http://docbook.org/ns/docbook" xmlns:ns5="http://www.w3.org/1998/Math/MathML" xmlns:ns4="http://www.w3.org/2000/svg" xmlns:ns3="http://www.w3.org/1999/xhtml" xmlns:ns2="http://www.w3.org/1999/xlink" xmlns:ns="http://docbook.org/ns/docbook" xml:id="firewall" version="5.0" xml:lang="hr">
+  <info>
+    <title xml:id="firewall-ti1">Vatrozid</title>
+  </info>
+
+  <para xml:id="firewall-pa1" revision="1">This section allows to configure some simple firewall rules: they determine
+which type of message from the Internet will be accepted by the target
+system. This, in turn, allows the corresponding services on the system to be
+accessible from the Internet.</para>
+
+  <para>In the default setting, no button is checked - no service of the system is
+accessibly from the network. The "<emphasis>Everything (no
+firewall)</emphasis>" button has a particular role: it enables access to all
+services of the machine - an option that does not make much sense in the
+context of the installer since it would create a totally unprotected
+system.  Its veritable use is in the context of the Mageia Control Center
+(which uses the same GUI layout) for temporarily disabling the entire set of
+firewall rules for testing and debugging purposes.</para>
+
+  <para>All other checkbuttons are more or less self-explanatory. As an example, you
+will check the "CUPS server" button if you want printers on your machine to
+be accessible from the network.</para>
+
+  <para><emphasis role="bold">Advanced</emphasis></para>
+
+  <para>The set of checkbuttons only comprises the most common services. The
+"Advanced" button allows to enable messages that correspond to a service for
+which no checkbutton exists. The "<emphasis>Advanced</emphasis>" button
+opens a window where you can enable a series of services by typing a list of
+couples (blank separated)</para>
+
+  <para><emphasis>&lt;port-number>/&lt;protocol></emphasis></para>
+
+  <simplelist>
+    <member>- <emphasis>&lt;port-number></emphasis> is the value of the port assigned to
+the service you want to enable (e.g. 873 for the RSYNC service) as defined
+in <emphasis>RFC-433</emphasis>;</member>
+
+    <member>- <emphasis>&lt;protocol></emphasis> is one of <emphasis>TCP</emphasis> or
+<emphasis>UDP</emphasis> - the internet protocol that is used by the
+service.</member>
+  </simplelist>
+
+  <para>For instance, the entry for enabling access to the RSYNC service therefore
+is <emphasis>873/tcp</emphasis>.</para>
+
+  <para>In case a service is implemented to use both protocols, you specify 2
+couples for the same port.</para>
+</section>
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