Practical Cyber Hacking Skills for Beginners - NMAP Port States

The video tutorial explains the six different port states identified by the Nmap tool: open, closed, filtered, unfiltered, open filtered, and closed filtered. Each state is described in terms of its accessibility and the presence of applications using the port. The tutorial highlights the security implications of each state, emphasizing the importance of scanning and securing ports. Special scans like AX and scene scans are mentioned for deeper analysis. The video concludes with a brief introduction to NMA commands.

What is the primary characteristic of an open port state in Nmap?

• It cannot be determined if it is open or closed.

• It is blocked by a firewall.

• It is not in use by any application.

• It is actively used by an application and open for connections.

How does a closed port differ from an open port?

• A closed port is blocked by a firewall.

• A closed port cannot be determined if it is open or closed.

• A closed port is actively used by an application.

• A closed port is accessible but not in use.

What prevents Nmap from determining the status of a filtered port?

• The port is actively used by an application.

• The port is closed and not accessible.

• A firewall blocks the probes from reaching the port.

• The port is open and ready for connections.

What is required to determine the status of an unfiltered port?

• No additional scans are needed.

• The port must be closed first.

• A simple Nmap scan is sufficient.

• Special scans like the AX or scene scan are needed.

Which port state is described as rare and indicates uncertainty in its status?

• Open state

• Filtered state

• Closed state

• Open filtered state