How to uninstall nwatch from Ubuntu
To uninstall just nwatch package itself from Ubuntu execute on terminal:
sudo apt-get remove nwatch
Uninstall nwatch and it's dependent packages
To uninstall the nwatch package and any other dependant package which are no longer needed on Ubuntu.
sudo apt-get autoremove nwatch
If you also want to delete configuration and/or data files of nwatch from Ubuntu then this will work:
sudo apt-get purge nwatch
To delete configuration and/or data files of nwatch and it's dependencies from Ubuntu then execute:
sudo apt-get autoremove --purge nwatch
nwatch package information
Network service detector
NWatch is a sniffer but can be conceptualized as a "passive port scanner", in that it is only interested in IP traffic and it organizes results as a port scanner would. The advantage of this tool is that services that are open for a short period of time can be detected with NWatch while successive nmap scans will miss them. The disadvantage is that the service have to be actively used to be detected.