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authorPapoteur <papoteur@mageialinux-online.org>2017-06-28 12:48:13 +0200
committerPapoteur <papoteur@mageialinux-online.org>2017-06-28 12:48:13 +0200
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+<html>
+ <head>
+ <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+
+ <title>Firewall</title>
+ <meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
+ <link rel="home" href="index.html" title="Instalando com DrakX">
+ <link rel="up" href="index.html" title="Instalando com DrakX">
+ <link rel="prev" href="securityLevel.html" title="N&iacute;vel de Seguran&ccedil;a">
+ <link rel="next" href="installUpdates.html" title="Atualiza&ccedil;&otilde;es"><style xmlns="http://www.w3.org/TR/xhtml1/transitional" type="text/css">
+ <!--
+ body { font-family: sans-serif; font-size: 13px }
+ table { font-family: sans-serif; font-size: 13px }
+ --></style></head>
+ <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
+ <div lang="pt_BR" class="section" title="Firewall">
+ <div class="titlepage">
+ <div>
+ <div>
+ <h2 class="title"><a name="firewall"></a>Firewall
+ </h2>
+ </div>
+ </div>
+ </div>
+
+
+
+ <p><a name="firewall-pa1"></a>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.
+ </p>
+
+
+ <p>In the default setting, no button is checked - no service of the system is
+ accessibly from the network. The "<span class="emphasis"><em>Everything (no
+ firewall)</em></span>" 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.
+ </p>
+
+
+ <p>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.
+ </p>
+
+
+ <p><span class="bold"><strong>Avan&ccedil;ado</strong></span></p>
+
+
+ <p>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 "<span class="emphasis"><em>Advanced</em></span>" button
+ opens a window where you can enable a series of services by typing a list of
+ couples (blank separated)
+ </p>
+
+
+ <p><span class="emphasis"><em>&lt;port-number&gt;/&lt;protocol&gt;</em></span></p>
+
+
+ <table border="0" summary="Simple list" class="simplelist">
+ <tr>
+ <td>- <span class="emphasis"><em>&lt;port-number&gt;</em></span> is the value of the port assigned to
+ the service you want to enable (e.g. 873 for the RSYNC service) as defined
+ in <span class="emphasis"><em>RFC-433</em></span>;
+ </td>
+ </tr>
+ <tr>
+ <td>- <span class="emphasis"><em>&lt;protocol&gt;</em></span> is one of <span class="emphasis"><em>TCP</em></span> or
+ <span class="emphasis"><em>UDP</em></span> - the internet protocol that is used by the
+ service.
+ </td>
+ </tr>
+ </table>
+
+
+ <p>For instance, the entry for enabling access to the RSYNC service therefore
+ is <span class="emphasis"><em>873/tcp</em></span>.
+ </p>
+
+
+ <p>In case a service is implemented to use both protocols, you specify 2
+ couples for the same port.
+ </p>
+
+ </div>
+ </body>
+</html>