What is a TCP port scanning attack?

Related questions

1. What port number does Ping use?
2. How does a port scan work?
3. What is TCP connect scan?
4. Is Traceroute a TCP or UDP?
5. Why is port scanning illegal?
6. What is FIN scanning?
7. Is a port scan illegal?
8. What is Zoomeye?
9. What is TCP FIN scan?
10. What port and protocol does DNS use?

Tags

1. #https
2. #listening
3. #machine
4. #destination
5. #occurs
6. #example
7. #target
8. #launches
9. #sends
10. #service
11. #ports
12. #listen
13. #traffic
14. #servers
15. #packets
16. #which
17. #using
18. #therefore
19. #attacker
20. #attack