IP Scanners from the perspective of a non-system administrator is like network wizardry, but the real intention of such programs is utilitarian. This type of application is a regular part of a system administrators toolkit. Using these principles in conjunction with proven security tools and a proven proven methodology will further harden your environment to acceptable levels of security. Remember, the goal isnt achieving 100% of security is to establish a level of security that will help mitigate the risks.”]
Source: https://hackercombat.com/ip-scanners-in-the-nutshell/