title: fail2ban regex rule
body: <p>just for test, I would like to block all traffic to my website not coming from Android browser using fail2ban.</p>
  
  <p>This is the string in the log file:</p>
  
  <pre><code>GET http://www.aaaaa.com/video/09_12_2014_spot_app.mp4 - ORIGINAL_DST/171.171.171.171 video/mp4 
  [
      User-Agent: stagefright/1.2 (Linux;Android 5.0)
      Cookie: _gat=1; _ga=GA1.2.909922659.1455111791
      Range: bytes=705201-
      Connection: Keep-Alive
      Accept-Encoding: gzip
      Host: www.aaaaa.com
  ] 
  [
      HTTP/1.1 206 Partial Content
      Date: Thu, 26 May 2016 15:27:16 GMT
      Server: Apache/2.2.15 (CentOS)
      Last-Modified: Tue, 09 Dec 2014 19:55:17 GMT
      ETag: "2b739f-ec2b1-509cdec1610e2"
      Accept-Ranges: bytes
      Content-Length: 262144
      Content-Range: bytes 705201-967344/967345
      Connection: close
      Content-Type: video/mp4
  ]
  </code></pre>
  
  <p>Any help? Thank you in advance!</p>