Check Open Ports

Check a device you own or are authorized to test for responding network ports.

What this does

Port scanning checks which network ports on an authorized device respond to connection attempts. Use it to inventory services on your own network.

Before you start

  • Connect GhostESP to the same network as the device.
  • Identify the device with LAN discovery.
  • Only scan devices you own or have explicit permission to test.

On-device steps

  1. Select a discovered device with Select LAN.
  2. Choose Scan Open Ports.
  3. Review the responding ports.

CLI steps

  1. Run scanports <ip> to check a specific device.
  2. Add all to check all ports, or a range such as 20-1024 to limit the scan.
  3. Run scanssh <ip> to check whether SSH responds on the device.

Expected result

GhostESP lists ports that respond. A missing result does not prove that a service is absent; firewalls and network policy can block scans.

Troubleshooting

  • No ports respond: Confirm the IP address, network connection, and whether the device has a firewall.
  • The wrong device is scanned: Run LAN discovery again and verify the IP address before retrying.
  • The scan is slow: Limit the port range to the services you need to inspect.