Nmap is a great tool for any network admin
October 04, 2019

Nmap is a great tool for any network admin

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

Overall Satisfaction with Nmap

We use it to maintain PCI compliance by checking ports, by testing firewall rules, and to double-check what we see connected to the network. It's a great tool to identify unintended changes or open ports, or to verify our third-party scanner reports one way or the other.
  • Detects open ports
  • IDs hosts
  • Checking firewall rules
  • Maybe take some of the features of Zenmap and bake them in?
  • Include fancy extra graphical results charts or graphs or something to show people who you want to convey info too but have no idea what Nmap is actually doing.
  • I don't really think I'd change a lot actually.
  • Nmap with Wireshark is free, so it's been a great combo team to gather info and test.
  • It's allowed us to avoid fines from false positives and to fix actual issues ourselves.
  • Great for finding hosts, helps keep the network secure.
I haven't really evaluated a ton of others but there are some more basic versions, some have a GUI (like Zenmap for Nmap) but are less feature-rich. Some just don't work. Nmap is the default too, I think because of its great flexibility and straightforward use. Not sure there's anything on the same page at the price.
The best support for it is its webpage which has more than enough information to get you going, however, there are also a million or so youtube videos, etc., so that if you are familiar with the basic ideas, you can easily get up and running with just a little work.

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If you get an email saying your organization has failed its PCI scan because of a service running on a specific port that is a known port, say port 500 for a tunnel or something, and they want you to justify why port 500 is open, but you never opened port 500, you can use Nmap to check that. It's awesome in that role.

Nmap Feature Ratings

Automated network device discovery
Network monitoring
Network capacity planning
Network mapping
Customizable reports
Wireless infrastructure monitoring