Network exploration tool and security / port scanner

-sC .
    Performs a script scan using the default set of scripts. It is equivalent to --script=default. Some
    of the scripts in this category are considered intrusive and should not be run against a target
    network without permission.

-sV (Version detection) .
    Enables version detection, as discussed above. Alternatively, you can use -A, which enables version
    detection among other things.

-v (Increase verbosity level) .
    Increases the verbosity level, causing Nmap to print more information about the scan in progress.
    Open ports are shown as they are found and completion time estimates are provided when Nmap thinks a
    scan will take more than a few minutes. Use it twice or more for even greater verbosity.

    Most changes only affect interactive output, and some also affect normal and script kiddie output.
    The other output types are meant to be processed by machines, so Nmap can give substantial detail by
    default in those formats without fatiguing a human user. However, there are a few changes in other
    modes where output size can be reduced substantially by omitting some detail. For example, a comment
    line in the grepable output that provides a list of all ports scanned is only printed in verbose mode
    because it can be quite long.