Demo Abstract: On preventing GTS-based Denial of Service in IEEE 802.15.4

The IEEE 802.15.4 standard features some optional services, including the Guaranteed Time Slot (GTS) mechanism. It provides network devices with collision-free access to the medium to assure Quality of Service. GTS suffers from a severe security vulnerability: an adversary can easily perform a Denial of Service attack by selectively jamming collision-free communications. We present Secure GTS, our solution to the GTS-based Denial of Service attack, and our implementation for the TinyOS platform on Tmote Sky motes. Our test application shows that Secure GTS manages to prevent Denial of Service attacks.