NUTSS: Signaling based IP Architechture

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NUTSS
NUTSS is a network architecture that uses signaling before establishing the data channel. The goal is to enable middle boxes like firewalls and NATs, which can intercept the signals to discover the intent of the connection. The middle boxes can then facilitate the connection setup, or enforce other policies. While the data channel is a direct TCP/IP connection between two IP addresses and ports, the signaling is through SIP, which uses stable endpoint identifiers for routing.
NUTSS stands for its constituent components -- NAT that effectively extends the IP address space, URIs that restore end-to-end stable addressing, Tunnels that allow protocols like IPsec and mobile IP to run through NATs, SIP that routes messages with URIs, end-to-end, and lets hosts signal their intentions to each other and to middle boxes in real time, and lastly STUNT that tells how to establish direct IP connectivity through NATs.
Researchers
(email |webpage) Saikat Guha, PhD Student
(email |webpage) Paul Francis, Professor