Nmap, or the Network Mapper, is a powerful command-line tool for diagnosing network problems, finding security vulnerabilities, and host of other uses. Its many options and scanning methods can be daunting to even the most experienced of end users, but nmapFE is a graphical interface for nmap that makes it easy to use even the most powerful aspects of the network mapper, and can be a life-saver when you run into networking problems.

Nmap is a utility for network exploration or security auditing. It supports ping scanning (determine which hosts are up), many port scanning techniques, version detection (determine service protocols and application versions listening behind ports), and TCP/IP fingerprinting (remote host OS or device identification).

The new release of Nmap (free software network port scanner) is here. A primary focus of this release is the Nmap Scripting Engine, which has allowed Nmap to expand up the protocol stack and take network discovery to the next level.

Remote OS Fingerprinting is becoming more and more important, not only for security pen-testers,but for the black-hat. Just because Nmap is getting popularity as the tool for guessing which OS is running in a remote system, some security tools have been developed to fake Nmap in its OS Fingerprinting purpose.

Zenmap is the official graphical user interface (GUI) for the Nmap Security Scanner. It is a multi-platform, free and open-source application designed to make Nmap easy for beginners to use while providing advanced features for experienced Nmap users. The purpose of Zenmap is not to replace Nmap.

Use nmap to discover network elements and to scan ports on those network elements, learn here how to install nmap GUI front ends, and how to use them.

Fixing a Problem with Nmap Ever had an ipv4 network address that is supposed to migrate over via a high availability mechanism simply not work or even stranger if there were several addresses some do and some do not?

Ever wondered how attackers know what ports are open on a system? Or how to find out what services a computer is running without just asking the site admin? You can do all this and more with a handy little tool called Nmap.

Happy new year, everyone. I'm happy to announce Nmap 5.20--our first stable Nmap release since 5.00 last July! It offers more than 150 significant improvements.