Operating system (OS) scanning makes it possible to focusing further attacks to known weaknesses of that system. The principle of OS scanning is that different OS vendors may make different implementations for the TCP/IP protocol in their OS products. IP, UDP and TCP as well as application layer protocols are can be used for OS scanning. These methods can be used in active ways sending probes to the targets or passive ways only listening without probes. Totally, whether it used in an active or passive way, the essence for OS scanning is analyzing the characteristics of the packets sent by the targets and matching the characteristics with certain operating system. So, in some cases, we need two or more of these methods together to determine the type of the OS for the target.

Abstract-In the data gathering area, mobile terminals with various sensors and abundant user interfaces can provide functions of data gathering, storage and transport on time. Meanwhile, the intelligent OS, e.g., Android, which has properties like open-source, equally extended applications, strong compatibility, etc., is suitable for application software development on mobile terminals. In this paper, a data gathering application software running on mobile terminal based on Android is designed and implemented. The design scheme of software architecture, data gathering, storage flow, and the implement of main functions of the application are also introduced.