On Tue, 9 Jan 2007, Alessandro Dellavedova wrote: > am I wrong or the mechanism that you implement is similar to the one > implemented in lft (Layer Four Traceroute http://pwhois.org/lft/ ) ? No, what you describe is similar to tcptraceroute, from what I understand (they use stray SYNs or RSTs or other TCP packets to do a regular traceroute). /mz