Next, sort the traced packets according to ip source address by clicking on the source column header; a small downward pointing arrow should appear next to the word source. if the arrow points up, click on the source column header again. select the first icmp echo request message sent by the client computer, and expand the internet protocol portion in the "details of selected packet header" window. in the "listing of captured packets" window, you should see all of the subsequent icmp messages (perhaps with additional interspersed packets sent by other protocols running on the computer) below this first icmp. use the down arrow to move through the icmp messages sent by the computer.