title: Oracle: connections closed by firewall
body: <p>I have a server with Windows Server 2012 and Oracle 11g installed.
  There is a problem with the connections on Oracle: the connections are lost when idle for about 10 minutes.</p>
  
  <p>I did several tests and check many sites to find the problem, and I found the obvious: the problem is the firewall.</p>
  
  <p>If the firewall is off, this problem do not happen. But the firewall in this case can't be off.
  The following rules is the set of firewall for Oracle here:</p>
  
  <ul>
  <li>Oracle_home\bin\oracle.exe - Oracle Database executable</li>
  <li>Oracle_home\bin\tnslsnr.exe - Oracle Listener</li>
  </ul>
  
  <p>Did I left behind something important? :)</p>
  
  <p>Thanks!</p>