You didn't understand my comment. It's not about the specific thing (be it nmap or some other tool), it's about the intention behind using the tool. The admini

You didn't understand my comment. It's not about the specific thing (be it nmap or some other tool), it's about the intention behind using the tool. The administrator of the network didn't intend to allow port scanning, but there were no technical measures (firewalls) to prevent it, and you did port scanning => you're wrong. The writer of the access control software intended to have no bugs, but a bug slipped in to allow you to exploit it => you're wrong.