tcptraceroute: tcptraceroute (traceroute implementation using TCP packets) tcptraceroute: tcptraceroute: The more traditional traceroute(8) sends out either UDP or ICMP ECHO tcptraceroute: packets with a TTL of one, and increments the TTL until the tcptraceroute: destination has been reached. By printing the gateways that generate tcptraceroute: ICMP time exceeded messages along the way, it is able to determine tcptraceroute: the path packets are taking to reach the destination. tcptraceroute: tcptraceroute: tcptraceroute: tcptraceroute: