lft :: Layer Four Trace

Colin pointed out a useful utility called lft in response to a question on IIU. lft looks like a useful alternative traceroute application as it claims to have the ability to identify stateful inspection firewalls and other useful information.

What I found immediately attractive was the -A option which displays the AS numbers of addresses along the path and also the -N which looks up and displays the network names.

e.g.

and