A graphical network simulator to design and configure virtual networks

GNS3

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GNS3 1.5.1

  -  49.9 MB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of GNS3 1.5.1.


For those interested in downloading the most recent release of GNS3 or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download GNS3 1.5.1

  • GNS3 1.5.1 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    GNS3 1.5.1 Screenshot 1
  • GNS3 1.5.1 Screenshot 2
  • GNS3 1.5.1 Screenshot 3
  • GNS3 1.5.1 Screenshot 4

What's new in this version:

GUI
- Try to fix a crash when reseting interface label
- Fix a crash with broken file system
- Fix EtherSwitch default name format
- Fix crash when you have utf-8 char in the README
- Fix rare crash when creating a link
- Stop node before hot unlink
- Prevent a crash due to issue in Qt
- Add another security to prevent client to send empty hostname
- Fix rare crash when deleting interface from the cloud
- Fix rare crash in topology summary view
- Ask user to send explanation if they cross a rare error
- Fix rare crash when deleting a node
- Hotlink support for Docker
- Fix typo in the a warning dialog
- Fix Remote GNS3 VM requires local server
- Fix AttributeError: 'NoneType' object has no attribute '_server'
- No timeout when importing a .gns3project

Server
- Increase the number of interface for docker
- Add the method in the bad request answer
- Fix a rare crash in IOU
- Fix a crash when docker is used but not installed
- Backport Docker node hot linking
- Allows hot-linking for Docker containers

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