title: Can't remove Server: Apache header
body: <p>I have &quot;Server: Apache&quot; in my HTTP response headers and want to remove it.
  I followed instructions like adding this to <code>httpd.conf</code>:</p>
  <pre><code>ServerSignature Off  
  ServerTokens Prod
  Header unset Server
  </code></pre>
  <p>But the last line has no effect. First two lines have changed header's content (earlier it contained also information about OS and PHP), but I need to remove it completely.
  How to do this?</p>