Nmap 4.75 recognizes iPhones and visualizes networks

Sep 10, 2008

"If we are going to call Nmap the 'Network Mapper', it should at least be able to draw you a map of the network! " writes developer Fyodor in announcing the newest version 4.75 of the Nmap security scanner.

Developers have integrated a network topology visualization tool in the Nmap's Zenmap graphical user interface by using RadialNet. And the network scanner now also recognizes iPhones and Wii consoles.

The topology map might, for instance, visualize the number of open ports per scanned host: a red cross symbol means that more than six open ports were detected; a white cross means that Nmap was unable to reach the host. A network administrator can thereby get a quick overview of network hosts having large numbers of open ports. RadialNet shows the distances to the scanned host as grey lines: every line represents a network hop. Routers, switches and WiFi access points appear on the map as colored squares.

Nmap can now draw a plan of a scanned network.

The Nmap services can also record which open ports are offered most often to hosts in the network. Over the summer, Nmap was able to supply this information to larger organizations by scanning a few million IP addresses.

Based on these results, Nmap regularly scans only a thousand TCP and UDP ports, compared with the previous 1,715 TCP ports and 1,488 UDP ports. This step should accelerate the Nmap scanning in that the thousand ports remain on a hit list based on the gathered data. Even a scan for the "-F" option captures only the one hundred most crucial ports instead of the previous thousand or more.
The Nmap developers have brought their database of discovered operating systems up to date for a period covering March through July of this year. Nmap recognizes more than 1,500 signatures and can identify Apple iPhones and Nintendo Wii consoles. The network mapper also cooperates with Windows 2000.

The list of enhancements is considerably long and includes numerous bug fixes and changes to the Nmap Zenmap user interface. The Nmap 4.75 Changelog provides a complete overview and the software can be downloaded from their Download page.

Related content

  • RadialNet

    RadialNet draws a picture of the network, helping admins identify potential security holes.

  • Nmap Workshop

    In "The Matrix Reloaded," Trinity uses Nmap to hack into the power grid to pave Neo's way to the architect of the virtual world. However, the port scanner is also ideal for more mundane purposes – such as discovering vulnerabilities in your domestic network.

  • Nmap Methods

    How does the popular Nmap scanner identify holes in network security? In this article, we examine some Nmap analysis techniques.

  • Nmap Scripting

    Nmap is rolling out a new scripting engine to automatically investigate vulnerabilities that turn up in a security scan. We’ll show you how to protect your network with Nmap and NSE.

  • Charly's Column

    Many tools keep growing with each new version, but Nmap 4.00 has lost weight thanks to the Diet-Nmap project. The latest incarnation of Nmap is not only quicker, it is also more frugal with memory.


  • Sweet!

    Great THANK YOU, fyodor - keep ours eyes open!
comments powered by Disqus
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters

Support Our Work

Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.

Learn More