A port scan returns an ‘open’ response. What does this mean?
- There was no reply from the host
- A service is listening on the port
- Connections to the port will be denied
| Explanation & Hint:
When a port scan returns an “open” response, it means that a service is actively listening on the scanned port. In other words, the target host has a service running and waiting for incoming connections on that port. This is different from a closed or denied port, which would mean that the port is not actively accepting connections, or there’s a firewall or security measure in place that prevents access to the port. |