I couldn’t find and document about intrace online. But it looks like some kind of traceroute.
You can fire it up with this command: Intrace -i eth0 -h www.linux.com -p 80
After that open a browser and browse to linux.com or whatever website you are trying to trace. After that go back to Intrace and press enter to see the trace output with information. Sometimes you have to refresh the website couple of time to recieve better packet sequence. I only did it on port 80, you can do it on other ports too, running differant services.