Jamming for good: a fresh approach to authentic communication in WSNs
Proceedings of the second ACM conference on Wireless network security
Short paper: reactive jamming in wireless networks: how realistic is the threat?
Proceedings of the fourth ACM conference on Wireless network security
Defend your home!: jamming unsolicited messages in the smart home
Proceedings of the 2nd ACM workshop on Hot topics on wireless network security and privacy
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Firewalls are extremely effective at enforcing security policies in wired networks. Perhaps surprisingly, firewalls are entirely nonexistent in the wireless domain. Yet, the need to selectively control and block radio communication is particularly high in a broadcast environment since any node may receive and send packets. In this demo, we present WiFire, a system that brings the firewall concept to wireless networks. First, WiFire detects and analyzes packets during their transmission, checking their content against a set of rules. It then relies on reactive jamming techniques to selectively block undesired communication. We show the feasibility and performance of WiFire, which is implemented on the USRP2 software-defined radio platform, in several scenarios with IEEE 802.15.4 radios. WiFire is able to classify and effectively block undesired communication without interfering with desired communication.