Connection Failure Message-based Approach for Detecting Sequential and Random Tcp Scanning

Network scanning is considered the first step for attackers to gain access to a targeted network. Attackers will blindly scan the network without any prior knowledge about the active service or host in the target network. Such blind scan will generate a high ratio of connection failure messages that come in the form of Internet Common Message Protocol type3 code1 (host unreachable) and TCP-RST packets. This paper proposes an approach for TCP random and sequential scanning detection on the basis of connection failure messages.