How does this compare with [Prs2002] Clock Deviation/Skew as a Forensics/Tracking Tool research done by Tadayoshi Kohno.
http://www.cse.ucsd.edu/users/tkohno/
Bruce Klein iovation, Inc.
Hello Bruce,
I think the way he took the problem is much simpler than in this paper (and it gathers less informations about the hosts, too). The technique is described in this paper from Bret Mc Danel : http://www.0xdecafbad.com/TCP-Timestamping-Obtaining-System-Uptime-Remotely.html, who was kind enough to point us to it (we need to update the paper to give him the credit he deserves), the paper & tool use the statistical differences between the timestamps to separate services behind a screening router doing NAT, allowing network mapping behind a firewall, not fingerprinting of a single computer.
Erwan
