title: Cygwin Download Site empty with K9 filter installed
body: <p>I have the same problem as listed in <a href="https://stackoverflow.com/questions/28673949/cygwin-no-available-download-site">this question</a>, briefly, when I try to install Cygwin I have empty list of sites. (BTW the <a href="http://cygwin.com/mirrors.html" rel="nofollow noreferrer">Cygwin mirrors site</a> works fine from my browser!)</p>
  
  <p>The problem I know is due to the K9 filter I have installed.</p>
  
  <p>I tired whatever K9 advises to disable the filter per <a href="http://www1.k9webprotection.com/support/kb/K9155.html" rel="nofollow noreferrer">this link</a> but I can only install Cygwin when K9 is completely uninstalled.</p>
  
  <p>Any suggestions how to have K9 and install Cygwin ?</p>
  
  <p>Thanks!</p>