I need to block each user to make just one connection to download specific extension files, but I dont know how to tell that can make just one connection to each file and not just one connection to every file with this extension. i.e: www.google.com #All connection that required www.any.domain.com/my_file.rar #just one connection to that file www.other.domain.net/other_file.iso #just connection to this file www.other_domain1.com/other_file1.rar #just one connection to that file I hope you understand me and can help me, I have my boss hurrying me !!!