Does the appearance of asterisks during Traceroute on a specific port indicate a possible connection problem?

Yes, the appearance of asterisks (*) when performing a Traceroute on a specific port usually indicates that the packet did not receive a response from an intermediate node or the final host within the timeout period. This may suggest connection issues such as:

• Filtering or blocking of ICMP packets or UDP/TCP packets on this node (for example, by a firewall).
• Packet loss or high latency.
• The node does not respond to Traceroute requests.

However, asterisks do not always signify a serious problem — sometimes they are normal behavior of network equipment or security policies. For an accurate diagnosis, it is advisable to check the connection using other tools and methods.