Which applications can track the network packets

What is traceroute (tracert)?

The execution of the command traceroute or tracert results in specially prepared datagrams with a limited time-to-live (TTL) being sent to the target host one after the other. Each router passed automatically reduces the TTL by 1. The datagrams contain ICMP commands (Windows) or UDP commands (UNIX), which request a response from the router reached.

The first router reached on the way to the destination host receives a packet with a TTL of 1. It decreases the value by one, which causes it to drop to 0. As a result, the router does not forward the data packet, but discards it and sends back the response “Time to live exceeded in transit” including its own IP address. Tracert records this information together with the transmission time and repeats the process with a TTL increased by 1. This process is repeated until the target host or the defined maximum number of stations, too Hops called has been achieved. The targeted host sends the message "Port Unreachable" and thus ends the logging of the IP trace route. By default, a total of three packets are sent to each host, which is why Traceroute also shows three response times (in milliseconds) for each router.

Determine the trace route online

If you don't want to deal with command commands, you can also use Traceroute online. Many websites offer to follow the trace route to the destination IP address and in some cases even work with visual traceroute tools, which clearly display the information obtained. However, the sender address is usually that of the web server on which the website used is hosted - or one or more others - and not that of the respective user. Three such websites that can be used to follow the trace route are: