GNS3 version 1.5 has been released. Get Started Here!


The major new features of 1.5 are:


  • Docker containers support
  • 4K monitors support on Windows
  • The import/export of portable projects (.gns3project), this last feature is designed to work with the GNS3 VM.
  • Other important changes since 1.5 RC2 are:
  • The Windows all-in-one installer is now signed.
  • Show grid and snap to grid options.
  • Configurable proxy settings for the GNS3 VM.




  • The GNS3 server default port has been moved from 8000 to 3080.
  • Qemu VM type has been dropped when adding a new Qemu template using the Wizard. Please download a template from the marketplace to install pre-configured VMs as described in this documentation.
  • Please report bugs/issues found in that release. We cannot possibly test every use case and we depend on reports to improve GNS3 (Thanks!).


Windows and Mac OS X


Files for Windows and Mac OS X can be downloaded from here.


Linux installation


For Linux users we recommend an installation via Pypi.

pip3 install gns3-gui==1.5.0

pip3 install gns3-server==1.5.0


For an installation from our PPA (Ubuntu based Linux):


sudo add-apt-repository ppa:gns3/unstable

sudo apt-get update

sudo apt-get install gns3-gui


Docker support implementation was started by Goran Cetusic during the Google Summer Of Code 2015 and finished by the GNS3 core team.  Also, we would like to thank Bernhard Ehlers and Aj Nouri who contributed a lot of their time to test it.


We also have some documentation about using a Docker container in GNS3 that can be found on

They say love is a battlefield, but as any SysAdmin knows—so is the data center! With an endless supply of “evil villains,” like zombie VMs, data loss, performance bottlenecks, application downtime, service outages and more, that could be lurking in the dark corners of a data center, you SysAdmins are the first line of defense for today’s businesses and end users. Yes, SysAdmins are truly the unsung heroes of modern business. And as your role continues to evolve with the growth of hyperconvergence, hybrid IT and cloud computing among other new technology trends, so too do the threats and challenges you must defeat day in and day out.


So, to help recognize all of you hero SysAdmins and to start celebrating System Administrator Appreciation Day on Friday, July 29th, we’d like to hear about your greatest SysAdmin moment in history: a time YOU came to the rescue and saved the day. And don’t forget to tell us what your corresponding fictional superhero identity would be—we know you’re out there, Captain Uptime and Incredible Server Girl!


Use the comments section below to share your heroic tale and superhero identity by July 1, and we’ll give you the key to the city, er, I mean 250 thwack points as a token of our appreciation.


Challenge accepted.


THWACKcamp registration is open now>> THWACKcamp 2016


*Register by June 30th and you'll be entered to win 1 of 3 all expense paid trips to Austin, TX for you + 1 to attend THWACKcamp live!


Happy Father's Day!

Posted by DanielleH Administrator Jun 17, 2016

Happy Father's Day to all the IT Professionals out there! Colton's Dad is a SysAdmin, so we asked him to tell us exactly what he thinks his Dad does at work every day.


NPM 12 is here and unless you've been hiding under a rock (which is not likely with this crowd), I'm sure you've heard the buzz around the new features and new Orion platform UI.  But in case you haven't, here's what's been going on.


We saw some really great feedback through the beta and RC process (thank you participants!) and in addition to the features in this release, we've also reduced the upgrade blues.

  • 93% felt NPM 12 was worth the effort of upgrading
  • 96% felt the upgrade took average or less than average effort
    • 35.7% - average effort
    • 60.7% - less than average effort
  • 93.8% felt this upgrade was equivalent to or easier than a previous upgrade experience.


Have you upgraded to NPM 12 yet?  If yes, please tell us about your experience below!  If not, I would highly encourage you to connect with folks in the comment section to vet any concerns or questions you have regarding this release.


NPM 12! Every Node. Every Path. Every Network.

It's no surprise to us how quickly technology evolves and with it new ways to communicate and stay connected seem to pop up just as quickly.  So, what social platforms do you use and how often? Anonymous survey, so no points.  Sorry, folks.  But we do need and appreciate your feedback!


Take Survey

Attached is the link to the recording from the session >> Click Here


Hello All,


Just a quick reminder we are hosting a LIVE Demo this morning with cobrien + GNS3 Academy Instructor, David Bombal, to showcase the power of NPM integrated in a GNS3 virtual environment. The session, which is hosted by SDxCentral, starts in a couple hours therefore if you have time this please join in! We are offering up some FREE SDN + OpenFlow training for those that sign up!!


Hope to see some Thwack members there!



GNS3 DemoFriday: How to – Top Notch Testing & Analysis with SolarWinds Network Performance Monitor

June 10th - 10amPT


“Test early, test often” is a well-known mantra among IT folks, but that “spare” network gear is often in short supply. GNS3 has just the solution – virtualized networks! You can use GNS3 to test monitoring, mock up a network, perform a dry-run of an upgrade, or even just tinker with the newest features of your product. We will show you just how valuable the combination of GNS3 and  SolarWinds Network Performance Monitor.

In the GNS3 demo, David Bombal and Chris O'Brien will help you in setting up and configuring a virtual network lab using GNS3 and then spinning up a virtual machine running the SolarWinds Network Performance Monitoring solution to test the power of brand new features like Netpath Service which will help you discover the entire, complex network path that connects users to services far, far away on the Internet.

Sign up now & automatically enter for a chance to win a Free SDN & Openflow course!

This GNS3 / Solarwinds Network Performance Monitor demo is available to everyone, but would benefit network architects and network engineers the most. VPs of  strategy and operations should listen in as well if they are looking for change within their organization and looking for a new testing environment at scale.


You are about to embark on a journey into the deepest enigma of network management—NPM 12.

Join the ranks of the great Network Admins past and launch your own epic exploration to seek out new insights into your network and beyond.


As with all missions through uncharted paths, you will encounter strange, new, and exciting ideas and tools.

Fear not: the rewards will exceed your wildest expectations!

Get ready to encounter and conquer unheard-of capabilities, including:  NetPath, Network Insight for F5® BIG-IP®, an enhanced UI for easier navigation, improved Cisco® switch stack monitoring, and more!


The next generation of network monitoring is HERE. Your mission starts now.


June Mission

Use the mission’s resources to complete the tasks and answer the questions.

Correctly answer each question during the week and you'll be entered to win the weekly prize.

Correctly answer all 20 questions over the course of the month and you'll be entered to win the grand prize: an Acer® Curved 34-inch monitor!


Mission Rules

  1. A new question will open every day (Monday - Friday) starting on June 6th.
  2. Once a question has opened, it will remain open until July 3rd @ 11:59pm CT. Check the schedule below for exact open/close times.
  3. Correctly answer all five questions within a given week and you’ll be entered to win the weekly prize:

   4. Correctly answer all 20 questions over the course of the month to be entered to win our grand prize! Acer Curved 34-inch Monitor!

    • Grand Prize - Drawing on July 5th

     5. 150 points are being awarded for each correctly answered question.

    • There are 20 questions, which means you can earn a maximum of 3,000 points for this mission. Good luck!



Weekly PrizesMon
Week 1: RC Star Wars Bundle: Millennium Falcon + X-Wing

Complete questions 1-5 by June 10 to be entered to win

Week 2: PC Video Game Bundle: No Man's Sky + OverWatch
Complete questions 6-10 by June 17 to be entered to win

Week 3: Gaming Bundle: SteelSeries Siberia Gaming Headset + Corsair Gaming Mouse

Complete questions 11-15 by June 24 to be entered to win

Week 4: Nvidia Shield TV

Complete questions 16-20 by July 3 to be entered to win

Correctly answer all 20 questions before July 3 and get entered to win the Grand Prize!
Acer Curved 34-inch Monitor

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