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Published in journal "Software systems and computational methods", 2016-2 in rubric "Data encryption and data protection", pages 173-183.
Resume: Two-factor authentication is required to establish a secure connection when a remote user tries to connect to the corporate web services. Authentication is a prerequisite for web services that process confidential information. Two-factor authentication is a way to improve the corporate information security. There are many ready solutions for the implementation of two-factor authentication system but these solutions have several disadvantages, such as high cost or difficult integration into existing corporate information structure. The aim of this study is to define the architecture of the system that overcomes the mentioned disadvantages. For designing a protection system against password guessing the authors previously used a method of static analysis to justify the demand for systems of this type. The authors also used data analysis method to determine the requirements for the system of two-factor authentication; an experiment confirmed the results of a research. Presented architecture provides protection from password guessing, does not depend on additional hardware or software and has a modular structure, which gives the advantage of scalability. The architecture defines advanced functionality for such systems: determining geographic location of real IP-addresses, address filtering based on geolocation and proxy addresses using a POST requests. It also allows building modules, which can be easily integrated with existing enterprise infrastructure. The result of using the proposed system shows that the percentage of intruders accessing corporate information system is reduced.
Keywords: information security, password guessing, single sign-on technology, service-oriented architecture, control permissions, one-time password, authentication code, two-factor authentication, secure connection, web service
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