Nmap: the best, free network scanning tool
February 27, 2020

Nmap: the best, free network scanning tool

Anonymous | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User
Review Source

Overall Satisfaction with Nmap

It's only being used by our IS department. Mainly for scanning of open ports on devices. Looking for possible security holes using Nmap's scripting engine.
  • Open/Closed ports.
  • OS detection.
  • I would it say it's hard for new people using it as the there are too many switches.
  • Better/faster udp scanning. I know that udp is best effort but something better would be great instead of waiting for timeouts.
  • Positive return as it's open-source (free) on all OS's.
  • If a person is not used of the command line there are a ton of front ends that make it point-and-click so the learning curve is good. That cuts down on time and manpower.
We have used these:

Angry IP Scanner
Advanced IP Scanner

These apps are all Windows-based other than Masscan but they all work the same other than some of them are a paid product.
Great product. Can't beat free with a lot of front ends and some expandability.

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Powerful for such a small application. Easy to install on Linux, if not a default app that's is already installed. If you need a quick scan of a network for up/down hosts and there IP address/name it's great.

If you get into OS detection and mass port scanning of a large network it does slow down a far bit.

Nmap Feature Ratings

Automated network device discovery
Network mapping