抄録
In this paper, we outline a brief history of technologies against Internet-wide threats, especially DDoS attacks, and enumerate the requirements of wide area and cross-organization collaboration mechanism. Subsequently we introduce IODEF, which is under discussion at INCH WG of IETF for the purpose of incident information exchange, and show the potential and effectiveness of wide-area collaboration by developing a prototype of wide area traceback application with IODEF.
