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GNS3

9 indexed repositories · View on GitHub

gns3-gui
GNS3 Graphical Network Simulator

Python · 2635 stars
gns3-server
GNS3 server

Python · 1029 stars
dynamips
Dynamips development

C · 405 stars
gns3-registry
GNS3 devices registry

Shell · 392 stars
gns3-web-ui
WebUI implementation for GNS3

TypeScript · 191 stars
ubridge
Bridge for UDP tunnels, Ethernet, TAP and VMnet interfaces.

C · 150 stars
vpcs
Simple Virtual PC Simulator

C · 145 stars
gns3-vm
FOR DEVELOPMENT ONLY GO TO GNS3.COM FOR THE VM WITH GNS3 INCLUDED

Shell · 96 stars
gns3-webclient-pack
Client pack to use with the web Ui via protocol handlers

Python · 25 stars

Beginner friendly Everything

Open All

[GNS3 3.1.0a5] Project Zoom In and Out buttons not operative Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 64/100

GNS3/gns3-web-ui#1815 · 3 comments · 1 reaction · Opened Sep 10, 2026
`gns3 --install-mime-types` fails on PyQt6: AttributeError: type object 'QStandardPaths' has no attribute 'ApplicationsLocation' Open

Difficulty 1/5 Under an hour Newbie friendliness 92/100

GNS3/gns3-gui#3852 · Opened Sep 10, 2026
Fix TypeError when using middle-click scroll in GNS3 3.0.6 with Python 3.13 Open

Bug

Difficulty 1/5 Under an hour Newbie friendliness 88/100

GNS3/gns3-gui#3851 · Opened Sep 2, 2026
Add button to open a console session to the GNS3 VM Open

Enhancement

Difficulty 3/5 1-2 days Newbie friendliness 55/100

GNS3/gns3-gui#3850 · Opened Aug 17, 2026
Reconnect to VM in case it restarts Open

Enhancement

Difficulty 4/5 3-5 days Newbie friendliness 42/100

GNS3/gns3-gui#3849 · Opened Aug 17, 2026
VyOS appliances error Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

GNS3/gns3-registry#1065 · 8 comments · Opened Aug 16, 2026
Builtin Wi-Fi emulation Open

Enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

GNS3/gns3-gui#3848 · 1 comment · 1 reaction · Opened Aug 16, 2026
Better UI for managing switch ports for the embedded switch Open

Enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

GNS3/gns3-server#2856 · 2 comments · Opened Aug 16, 2026
GNS3 GUI Disconnects from VM Sometimes & Nodes Shut Down Open

Bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

GNS3/gns3-gui#3844 · Opened Aug 5, 2026
Feature: Group nodes into "zones" to work on one part of a big topology Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

GNS3/gns3-server#2843 · Opened Aug 1, 2026
Linux bridge Ethernet switch: known pitfalls with Docker, firewalld, and bridge-nf-call-iptables Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

GNS3/gns3-server#2832 · Opened Jul 25, 2026
GNS3 GUI Lags and Sometimes Crashes When Adding or Removing Specific Device (Ubuntu VM) to the topology Open

Bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

GNS3/gns3-gui#3840 · 3 comments · Opened Jul 23, 2026
Changing hda_disk_image on a linked-clone QEMU node is accepted but not reflected in the response (and the swap is data-unsafe) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

GNS3/gns3-server#2824 · Opened Jul 19, 2026
Import project ignores server errors Open

bug help wanted

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

GNS3/gns3-web-ui#1724 · 1 comment · Opened Jun 11, 2026
[GNS3 3.1.0a3] The "Create new version" button is missing in the web interface's "Add new template" dialog Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 64/100

GNS3/gns3-web-ui#1723 · 1 comment · 1 reaction · Opened Jun 11, 2026
QEMU VM warning: 'mtools' are not installed Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

GNS3/gns3-server#2778 · 1 comment · Opened Jun 9, 2026
Performance: Deleting projects is slow when handling large numbers Open

Enhancement

Difficulty 4/5 3-5 days Newbie friendliness 42/100

GNS3/gns3-server#2753 · Opened May 27, 2026
Image Manager: Database and filesystem can become out of sync Open

Enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

GNS3/gns3-server#2743 · Opened May 19, 2026
Allow suspending links between switches / hub Open

Enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

GNS3/gns3-server#2727 · Opened May 9, 2026
CVE-2026-44405 (Low) detected in paramiko-4.0.0-py3-none-any.whl Open

Mend: dependency security vulnerability

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

GNS3/gns3-server#2725 · 4 comments · Opened May 9, 2026
Add SSH support to web client pack and desktop GUI Open

Enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

GNS3/gns3-gui#3827 · Opened May 5, 2026
Refactor: Migrate Reactive Forms to Model Signals (Angular 21) Open

enhancement

GNS3/gns3-web-ui#1674 · 3 comments · 1 assignee · Opened May 5, 2026
SVG export embeds server url Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

GNS3/gns3-web-ui#1653 · Opened Apr 16, 2026
Why Alpine or Ubuntu Server Qemu VMs terminal get stuck when accessing via "Web Console" but VyOS's one not? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

GNS3/gns3-web-ui#1631 · Opened Apr 7, 2026
Idea: OOBE - Input needed! Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

GNS3/gns3-web-ui#1626 · 3 comments · Opened Apr 5, 2026
[BUG] When restoring a snapshot the gns3 exits the project Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 25/100

GNS3/gns3-server#2649 · Opened Mar 27, 2026
Potential Null Pointer Dereference Vulnerability Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

GNS3/dynamips#309 · 2 comments · Opened Mar 5, 2026
Add an option for LXC compute nodes Open

Enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

GNS3/gns3-gui#3787 · Opened Feb 5, 2026
Switch from Docker-CE to Podman Open

Enhancement

Difficulty 5/5 Over a week Newbie friendliness 38/100

GNS3/gns3-gui#3786 · 1 comment · Opened Feb 5, 2026
Docker Pull/Update button in UI Open

Enhancement

Difficulty 3/5 1-2 days Newbie friendliness 48/100

GNS3/gns3-gui#3772 · Opened Dec 30, 2025
Please auto go back to the ui after exit the shell Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

GNS3/gns3-vm#195 · 1 comment · Opened Dec 25, 2025
Convert GNS3 VM to GNS3 Template Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

GNS3/gns3-server#2578 · Opened Nov 25, 2025
Telnet console repeats lines! Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 25/100

GNS3/gns3-server#2577 · Opened Nov 22, 2025
API request on user info page not following access protocol Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

GNS3/gns3-web-ui#1557 · Opened Oct 31, 2025
GNS3 Support for systemd-enabled (Podman?) containers Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

GNS3/gns3-server#2565 · 2 comments · Opened Oct 13, 2025
Ask about the API of download image files in gns3 v3 version Open

Question

Difficulty 3/5 1-2 days Newbie friendliness 25/100

GNS3/gns3-server#2558 · 1 comment · Opened Sep 2, 2025
Tap connected to powered-off, closed lab, remains in use Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

GNS3/gns3-server#2549 · Opened Aug 22, 2025
Feature Request - GNS 3.0 Export Projects compatible with version 2.0 Open

Enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

GNS3/gns3-server#2545 · 1 reaction · Opened Jul 13, 2025
Auto-reconnect to remote server not working Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

GNS3/gns3-gui#3743 · Opened Jul 3, 2025
GNS3 client errors when pointing a device to a startup config that doesn't exist locally Open

Bug

GNS3/gns3-gui#3737 · 1 assignee · Opened Jun 12, 2025
[notbug] How would I host my own registry in addition? Open

question

Difficulty 4/5 3-5 days Newbie friendliness 25/100

GNS3/gns3-registry#973 · 1 comment · Opened Jun 5, 2025
Unable to Connect via Telnet to Cisco IOL Device After PC Wakes from Sleep Open

Bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

GNS3/gns3-gui#3734 · 2 comments · Opened May 24, 2025
Feature Request: Replicate TAP in-use status across multiple cloud nodes. Open

Enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

GNS3/gns3-gui#3721 · 3 comments · Opened Mar 18, 2025
"Configuration transfer to QEMU VMs" doesnt work with 3.0.4 Open

Bug

GNS3/gns3-gui#3718 · 1 reaction · 1 assignee · Opened Mar 9, 2025
Potential memory-leak Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

GNS3/dynamips#292 · Opened Mar 4, 2025
Potential memory-leak Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

GNS3/dynamips#291 · 1 reaction · Opened Mar 3, 2025
A Null Pointer Dereference Bug Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

GNS3/dynamips#290 · Opened Feb 27, 2025
A memory leak bug in function `mips64_jit_tcb_translate` Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

GNS3/dynamips#288 · 1 comment · Opened Feb 27, 2025
Feature Request: Navigation Enhancement for Large Topologies Open

Enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

GNS3/gns3-gui#3712 · Opened Feb 26, 2025
Allow admins to set password complexity Open

Enhancement

Difficulty 5/5 Over a week Newbie friendliness 15/100

GNS3/gns3-gui#3709 · 2 comments · Opened Feb 19, 2025

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