~ubuntu-branches/ubuntu/vivid/ubuntu-kylin-docs/vivid

<page xmlns="http://projectmallard.org/1.0/"

      type="topic" style="reference"

      id="net-firewall-ports">

 

  <info>

    <link type="guide" xref="net-security"/>

    <link type="seealso" xref="net-firewall-on-off"/>

    <revision pkgversion="3.4.0" date="2012-02-20" status="final"/>

    <revision version="13.10" date="2013-09-15" status="review"/>

 

    <desc>You need to specify the right network port to enable/disable network access for a program with your firewall.</desc>

    <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"/>

  </info>

 

  <title>Commonly-used network ports</title>

  <p>This is a list of network ports commonly used by applications that provide network services, like file sharing or remote desktop viewing. You can change your system's firewall to <link xref="net-firewall-on-off">block or allow access</link> to these applications. There are thousands of ports in use, so this table isn't complete.</p>

 

  <table shade="rows" frame="top">

    <thead>

      <tr>

        <td>

          <p>Port</p>

        </td>

        <td>

          <p>Name</p>

        </td>

        <td>

          <p>Description</p>

        </td>

      </tr>

    </thead>

    <tbody>

      <tr>

        <td>

          <p>5353/udp</p>

        </td>

        <td>

          <p>mDNS, Avahi</p>

        </td>

        <td>

          <p>Allows systems to find each other, and describe which services they offer, without you having to specify the details manually.</p>

        </td>

      </tr>

      <tr>

        <td>

          <p>631/udp</p>

        </td>

        <td>

          <p>Printing</p>

        </td>

        <td>

          <p>Allows you to send print jobs to a printer over the network.</p>

        </td>

      </tr>

      <tr>

        <td>

          <p>631/tcp</p>

        </td>

        <td>

          <p>Printing</p>

        </td>

        <td>

          <p>Allows you to share your printer with other people over the network.</p>

        </td>

      </tr>

      <tr>

        <td>

          <p>5298/tcp</p>

        </td>

        <td>

          <p>Presence</p>

        </td>

        <td>

          <p>Allows you to advertise your instant messaging status to other people on the network, such as "online" or "busy".</p>

        </td>

      </tr>

      <tr>

        <td>

          <p>5900/tcp</p>

        </td>

        <td>

          <p>Remote desktop</p>

        </td>

        <td>

          <p>Allows you to share your desktop so other people can view it or provide remote assistance.</p>

        </td>

      </tr>

      <tr>

        <td>

          <p>3689/tcp</p>

        </td>

        <td>

          <p>Music sharing (DAAP)</p>

        </td>

        <td>

          <p>Allows you to share your music library with others on your network.</p>

        </td>

      </tr>

    </tbody>

  </table>

</page>