Nmap (Network Mapper) is a powerful program for comprehensive network security surveys. It has a lot of serious tools for auditing.
Supports demand-driven scanning, has multiple port scanning methods, identification of port-based applications and their versions. Analyzes TCP/IP traffic, scans for traps and disguised threats.
Has flexible options for specifying target devices and ports.
Works from the command line.
He has received numerous awards and titles of "Security Product of the Year" from the Linux Journal, Info World, LinuxQuestions.Org and Codetalker Digest. Repeatedly starred in popular Hollywood movies, including "The Matrix. Reload", "Die Hard 4" and "Ultimatum Bourne".
- Flexible: has many advanced methods for mapping networks with all IP filters, firewalls, routers and other obstacles (see documentation page on the program's website);
- Powerful: Nmap can scan huge networks (literally hundreds of thousands of machines);
- Portable and portable: supports most operating systems, including Linux, Microsoft Windows, FreeBSD, OpenBSD, Solaris, IRIX, Mac OS X, HP-UX, NetBSD, Sun OS, Amiga and others;
- Simple: no matter how advanced the tools are, you can start as easily as "nmap-v-A targethost". Both traditional console and graphical versions (e.g. Zenmap) are available. For those who do not want to compile Nmap from source, there are binary packages;
- free: the aim of the project is to provide network administrators/auditors/hackers with an advanced tool for network research. Nmap is available for free download and use and comes with the full source code according to the license;
- Supported: Although Nmap is not warranted, it is well supported by the developer and user communities;
- popular: thousands of people download this program every day for a variety of operating systems. Nmap is also in the top ten of Freshmeat.Net's best programs.