The program traceroute is a computer network tool used to determine the route taken by packets across an IP network. It lists the IP addresses of the routers that were involved in transporting the packet. If the packet's route cannot be determined within a certain time frame, traceroute will report an asterisk (*) instead of the IP address. After a certain number of failures, the check will end. An interruption of the check can have many causes, but most likely it is caused by a firewall along the network path that blocks traceroute packets.

To trace a route, proceed as follows:

  1. Specify the traceroute host.

    Select the host you want to trace the route to. In the Traceroute host box, you can select a host for which a host definition exists. Alternatively, you can also select Custom hostname/IP address and enter a custom hostname or IP address into the textbox below.

  2. Select the IP version (only available if IPv6 is globally enabled).

    From the IP version drop-down list, select IPv4 or IPv6.

  3. Select the interface.

    Select the interface which you want to use for tracerouting.

  4. Print hop addresses numerically rather than symbolically and numerically (optional).

    Selecting this option saves a nameserver address-to-name lookup for each gateway found on the path.

  5. Click Apply.

    The output of traceroute will be displayed in the Traceroute Result area.