Who is knocking on the Telnet Port

Abstract

Network scanning is the primary procedure preceding many network attacks. Until recently, network scanning has been widely studied to report a continued growth in volume and Internet-wide trends including the underpinning of distributed scannings by lingering Internet worms. It is, nevertheless, imperative to keep us informed with the current state of network scanning, for factual and comprehensive understanding of the security threats we are facing, and new trends to serve as the presage of imminent threats.