nmap has -D option. It is called decoy scan. With -D option it appear to the remote host that the host(s) you specify as decoys are scanning the target network too. Thus their IDS might report 5-10 port scans from unique IP addresses, but they won’t know which IP was scanning them and which were innocent decoys.

Nmap (“Network Mapper”) is an open source tool for network scanning and security auditing. This intro gives you some basic and interesting Nmap usages with examples on a GNU/Linux system.

You have built a rock solid firewall, tested it with nmap scanning for ports that were open, locked down SSH with port knocking, restricted outgoing ports with iptables, setup psad to block attacks, and tcp_wrappers to limit access so you are set right? Well, not exactly....

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.

Umit is a user-friendly graphical interface to Nmap that lets you perform network port scanning. The utility's most useful features are its stored scan profiles and the ability to search and compare saved network scans.

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.

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.

Use Linux to do a quick scan of your network. The new beta version of nmap can scan your network for conficker activity. This is a quick easy way to check to see if you are infected; Beware there may be some false positives but at least this will start you down the path of detection.

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.