Hacked Gadgets Forum

February 21, 2009

How to use Nmap

at 12:07 pm. Filed under Computer Hacks


Darren from Hak5 goes over a cool tool called Nmap. If you want to do some snooping or just some exploration on your own network this is a good tool to learn. Video after the jump.

"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. "


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8 Responses to “How to use Nmap”

  1. The voice in your head Says:

    Slow news day?

  2. Bob Davis Says:

    I have used nmap to find viruses for year. I had one virus that neither symantec, nor AVG, nor McAfee could find, even for several months after I shut down the infected computer. Map the open ports on all the computers on your network. Then compare them and look for strange ports, especially known virus ports.

  3. Alan Parekh Says:

    Hi Voice,

    Not a big fan of Hak5 I take it. I don’t watch all the episodes but they usually are quite amusing. 🙂

  4. Pouncer Says:

    I usually use look@lan to check my network, but this sounds like it offers a little more. Thanks for the software tip.

  5. Pouncer Says:

    Whoops. That’s the product name (look@ lan), not a mail url. Not sure if you want to fix that, and maybe delete this comment afterward as well.

  6. beat eczema Says:

    I read about this a while back. Network managers are using this tool a lot now from what I understand.

  7. Haku Says:

    *** Problem with embedded video player from Systm ***

    If anyone is noticing that their bandwidth is being used whenever this page (or the front page of hackedgadgets) is simply opened up and not even pressing play on the embedded video player, and perhaps their mouse pointer keeps flickering from being invisible/visable, it’s because Systm’s embedded video player is behaving badly.

    I’ve had to adblock the video player ( http://revision3.com/player-v2509 ) to stop my mouse pointer from going flickery & bandwidth from being sucked dry.

  8. Alan Parekh Says:

    Thanks Haku (and the other emails I received),

    I have put the video after a jump so that it isn’t shown or loaded until the user clicks to load the full article and watch the video.

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