Nmap ("Network Mapper") is a free and open source (license) tool for network discovery and security auditing. As many find
Of network administrators and administrators that it is useful for tasks such as network inventory and management of service upgrade schedules and host control or service uptime. Nmap uses primary IP packets in new ways to determine which hosts are available on the network, which services (the name and version of the application) are provided by these hosts, what operating systems (and operating system versions) you are running and what type of packet / In use, and dozens of other characteristics. It is designed to quickly scan large networks, but works well against individual hosts. Nmap works on all major computer operating systems, and official binary packages are available for Linux, Windows, and Mac OS X. In addition to the Nmap executable command line, Nmap includes an advanced set of graphical user interface and a Zenmap viewer, a flexible data transfer and redirection tool (Ncat), a tool to compare the results of the survey (Ndiff), and the analysis tool of the generation and analysis of response (Nping).
Nmap is named "Security Product of the Year" by Linux Magazine, Info World, LinuxQuestions.Org, and Codestalker Digest. He has even appeared in 12 films, including The Matrix Reloaded, Die Hard 4, Girl With the Dragon Tattoo and The Bourne Ultimatum.
Nmap is a ...
Flexible: Supports dozens of advanced network mapping techniques filled with IP filters, firewalls, routers and other obstacles. This includes many port checking mechanisms (TCP and UDP), operating system detection, version detection, ping scanning, and more. See the documentation page.
Powerful: Nmap has been used to examine huge networks of hundreds of thousands of machines.
Portable: Most operating systems, including Linux, Microsoft Windows, FreeBSD, OpenBSD, Solaris, IRIX, Mac OS X, HP-UX, NetBSD, Sun OS, Amiga, and more are supported.
Easy: While Nmap offers a rich set of advanced features for power users, you can simply start like "nmap -v -A targethost". Both the traditional command line and the graphical versions (GUI) are available to suit your preferences. Binaries are available for those who do not wish to compile Nmap from the source.
Free: The main objectives of the Nmap project are to help make the Internet safer and provide administrators / reviewers / hackers with an advanced tool to explore their networks. Nmap is available for free download and comes with full source code that you can modify and redistribute according to license terms.
Well documented: great effort has been put into comprehensive and modern human pages, white papers, educational programs, and even a complete book! You can find them in multiple languages here.
Supported: While the Nmap comes with no warranty, it is well supported by a vibrant community of developers and users. Most of this interaction occurs on Nmap mailing lists. Most error reports and questions should be sent to the nmap-dev list, but only after reading the instructions. We recommend that all users participate in the low-traffic nmap-hackers list. You can also find Nmap on Facebook and Twitter. For real-time chat, you can join the #nmap channel on Freenode or EFNet.
Acclaimed: Nmap has won numerous awards, including "Information Security Product of the Year" by Linux, Info World and Codetalker Digest. He has appeared in hundreds of magazine articles, numerous movies, dozens of books, and one comic book series. Visit the press page for more details.
Popularity: Thousands of people download Nmap every day and is included with many operating systems (Redhat Linux, Debian Linux, Gentoo, FreeBSD, OpenBSD, etc.). Among the top ten (out of 30,000) are a program in a warehouse
Freshmeat.Net. This is important because it lends Nmap communities support for development and user support.
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