Czasopismo | ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA | Rocznik 2017 - zeszyt 1

Two-way complex steganographic system for authentication and authorization in IEEE 802.11 wireless networks

10.15199/13.2017.1.4

nr katalogowy: 103746
10.15199/13.2017.1.4

The article presents a complex system of two-way authentication operating in IEEE 802.11 wireless networks and making use of the network steganography methods. System assumptions, its general working principle and purpose of additional authentication performed in a covert manner are demonstrated herein. The steganography methods are described here in detail: a method using Probe Request frames, a method using DNS queries and a method using Timestamp fields in Beacon frames. A description of practical implementation of methods with the use of RaspberryPi microcomputers is also included. Keywords: network steganography, covert channel, authentication, data hiding, IEEE 802.11, Wi-Fi, wireless networks.Security of wireless networks that are ubiquitous nowadays is becoming a critical problem in many situations. Growing demands of users and more and more sophisticated methods used by criminals make it necessary to use advanced and more efficient security mechanisms. Such mechanisms have to provide security of transmission - encryption and security of access to network resources - authentication and authorisation. The already existing authentication and authorisation methods use cryptographic mechanisms in particular. Our works focused on the use of covert communication channels for the purpose of implementation of two-way authentication and authorisation in wireless networks operating in the IEEE 802.11 standards. Such a solution enables to introduce additional, classified level of protection against inter alia unauthorised access points (the so-called rogue access point). Related works Many authentication methods in IEEE 802.11 wireless networks are available. Starting from the methods described in the standard itself [1] such as popular WPA/WPA2 up to non-standard mechanisms using the so-called captive portal - namely logging of the user to the network after a successful connection. At present the mechanisms that do not allow [...]

Bibliografia

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[4] R. Beyah, S. Kangude, G. Yu, B. Strickland, and J. Copeland, “Rogue Access Point Detection Using Temporal Traffic Characteristics," Proc. IEEE Global Telecomm. Conf. (GLOBECOM ’04), 2004
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[7] H . Han, B. Sheng, C. Tan, Q. Li, and S. Lu, "A Timing-Based Scheme for Rogue AP Detection ", IEEE Transactions on Parallel and Distributed Systems, vol. 22, no. 11, NOVEMBER 2011.
[8] H . Yin, G. Chen, and J. Wang, “Detecting Protected Layer-3 Rogue APs," Proc. Fourth IEEE Int’l Conf. Broadband Comm., Networks, and Systems (BROADNETS ’07), 2007
[9] Telvis E. Calhoun Jr, Xiaojun Cao, Yingshu Li, Raheem Beyah, "An 802.11 MAC layer covert channel", Wiley Wireless Communication and Mobile Computing, 2010
[10] Telvis E. Calhoun Jr, Xiaojun Cao, Yingshu Li, Raheem Beyah, "Authentication in 802.11 LANs Using a Covert Side Channel", IEEE International Conference on Communications, 2009. ICC ‘09.
[11] H olloway R, Beyah R., "Covert DCF: A DCF-Based Covert Timing Channel in 802.11 Networks ", Eighth IEEE International Conference on Mobile Ad-Hoc and Sensor Systems , 2011
[12] Szczypiorski K., Mazurczyk W., "Hiding Data in OFDM Symbols of IEEE 802.11 Networks ", International Conference on Multimedia Information Networking and Security (MINES), Nanjing, China, 2010.
[13] Lilia Frikha, Zouheir Trabelsi, and Wassim El-Hajj, "Implementation of a Covert Channel in the 802.11 Header ", International Wireless Communications and Mobile Computing Conference, Tunis, 2008.
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[15] Sawicki, K., Piotrowski, Z. (2012, May). The proposal of IEEE 802.11 network access point authentication mechanism using a covert channel. In Microwave Radar and Wireless Communications (MIKON), 2012 19th International Conference on (Vol. 2, pp. 656-659). IEEE.
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[17] Linux Wireless - http://linuxwireless.org/en/users/Drivers/ath9k_htc/

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