CloseTheDoor – Port Scanning and Information Tool


CloseTheDoor identifies the listening ports for TCP/UDP over IPv4/v6 and the associated program files. This can help a technician discover security holes and find leaks in a system. It can also find vulnerabilities to help diagnose and prevent future malicious attacks. On a basic level it is a great tool to see all open ports in a visual manner.

It’s amazing how many options are given to you within this program. CloseTheDoor condenses many tasks and command line programs within its simple menu system. This include information that you could find using NET commands, regedit, and services.msc, and well as Googling an unknown process.

Here is a list of some of the submenu items:


  • locate
  • terminate
  • process


  • Google port or process
  • Wikipedia (search for Wikipedia entry)
  • statistics
  • port authority (search Gibson Research for info on a particular process)


  • services
  • task manager
  • net connections
  • system configuration
  • regedit
  • local security settings


  • net stats


  • Enumerate all listening ports for IPv4/IPv6
  • Gather informations about the listening ports
  • Ability to disable potentially dangerous ports



Download from Official Site – 128kb

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Chuck Romano

About the Author

Chuck Romano
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Chuck Romano is a business and technology professional with over 9 years experience in document imaging and 11 years in computer repair. Chuck provides results driven expertise in fields such as Healthcare IT, document imaging/workflow systems, marketing, and management.

Comments (2)

  • GregR says:

    Awesome little app, Chuck. Very nice find and thanks for recommending it. I have added it to my “toolbox”.

    Cheers from Canada!

  • Nathan says:

    This all cool until you are working on Server 2008 Server Core. With server Core you are back to a blank screen with a blinking prompt. Want speed, low memory utilization, lots of virtulization for lowest TCO know you commands and programs like netsh and dnscmd! The benefit is once you do, you will be the go-to tech. Down side is not all binaries are supported. MS prints a pocket consultant that is good.