Sécurité informatique et Nmap... |
28 Janvier 2008 |
Un billet sur un utilitaire d'administration réseau assez fréquent et que l'on rencontre parfois sur d'autres utilités (notamment l'analyse de ports réseaux pour se connecter à un ordinateur). Quelques liens, une reprise du descriptif de base (en anglais) et rien d'autre !..
«Nmap ("Network Mapper") is a free and open source (license) utility for network exploration or security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime. Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. It was designed to rapidly scan large networks, but works fine against single hosts. Nmap runs on all major computer operating systems, and both console and graphical versions are available. »
Nmap is ...
- Flexible: Supports dozens of advanced techniques for mapping out networks
filled with IP filters, firewalls, routers, and other obstacles. This includes
many port scanning mechanisms (both TCP & UDP), OS detection, version
detection, ping sweeps, and more. See the documentation page.
- Powerful: Nmap has been used to scan huge networks of literally hundreds
of thousands of machines.
- Portable: Most operating systems are supported, including Linux, Microsoft
Windows, FreeBSD, OpenBSD, Solaris, IRIX, Mac OS X, HP-UX, NetBSD, Sun OS,
Amiga, and more.
- Easy: While Nmap offers a rich set of advanced features for power users,
you can start out as simply as "nmap -v -A targethost". Both traditional
command line and graphical (GUI) versions are available to suit your
preference. Binaries are available for those who do not wish to compile Nmap
from source.
- Free: The primary goals of the Nmap Project is to help make the Internet a
little more secure and to provide administrators/auditors/hackers with an
advanced tool for exploring their networks. Nmap is available for free
download, and also comes with full source code that you may modify and
redistribute under the terms of the license.
- Well Documented: Significant effort has been put into comprehensive and
up-to-date man pages, whitepapers, and tutorials. Find them in multiple
languages here.
- Supported: While Nmap comes with no warranty, it is well supported by the
community and we appreciate bug reports and patches. If you encounter a
problem, please follow these instructions.
- Acclaimed:Nmap has won numerous awards, including "Information Security
Product of the Year" by Linux Journal, Info World and Codetalker Digest. It has
been featured in hundreds of magazine articles, several movies, dozens of books,
and one comic book series. Visit the press page for further details.
- Popular: Thousands of people download Nmap every day, and it is included
with many operating systems (Redhat Linux, Debian Linux, Gentoo, FreeBSD,
OpenBSD, etc). It is among the top ten (out of 30,000) programs at the
Freshmeat.Net repository. This is important because it lends Nmap its vibrant
development and user support communities.
Accessoirement les pare-feu (firewall) réagissent aux reniflements (scan) de ports effectués par Nmap s'ils sont bien réglés, et interdisent toute analyse des ordinateurs connectés ainsi protégés, s'ils sont bien protégés...
@+ Gaby
Publié dans la catégorie : Sorcier Glouton
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