Traceroute - Traces the route packets take
over a TCP/IP network
Traceroute prints the route
packets take across a TCP/IP.
The names (or IP numbers if
names are not available) of
the machines which are routing
packets from the machine
traceroute is running on to
the destination machine are
printed, along with the time
is took to receive a packet
acknowledgement from that
machine. This tool can be very
helpfull in diagnosing
networking problems.