Fastream NETFile Server 7.1.2 does not properly handle keep-alive connection timeouts and does not close the connection after a HEAD request, which allows remote attackers to perform a denial of service (connection consumption) by sending a large number HTTP HEAD requests.
https://exchange.xforce.ibmcloud.com/vulnerabilities/18192
http://www.securityfocus.com/bid/11687
http://users.pandora.be/bratax/advisories/b003.html