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The Center for Education and Research in Information Assurance and Security (CERIAS)

The Center for Education and Research in
Information Assurance and Security (CERIAS)

Nick Puketza - UC Davis

Students: Fall 2021, unless noted otherwise, sessions will be virtual on Zoom.

WATCHERS: A Protocol to Detect Disruptive Routers

Oct 16, 1998

Abstract

An attractive target for a computer system attacker is the router. An attacker in control of a router can disrupt communication by dropping or misrouting packets passing through the router. I will present a protocol called WATCHERS that detects and reacts to routers that drop or misroute packets. WATCHERS is based on the principle of conservation of flow in a network: all data bytes sent into a node, and not destined for that node, are expected to exit the node. WATCHERS tracks this flow, and detects routers that violate the conservation principle.
After describing WATCHERS in detail, I will discuss the difficult problems that remain before WATCHERS can be implemented.


About the Speaker

Nick Puketza



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YouTube

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