Originally Posted by validator456
How can I test nmap in real life without breaking the law or pissing off people? What networks can I test?
You can test YOUR networks and machines that you own. If you get permission from a network owner/administrator, you can then test on their systems too.
What you're asking is similar to saying "How can I test my lock-picking abilities, without breaking the law or pissing people off?"...you do it on your own locks/property, or where you have permission to do so. The same things apply here.