Download GNS3 v3.0 network emulator

GNS3 v3.0 new features

GNS3 3.0 is a major update of GNS network emulator with provides the following enhancements.

Major new features of GNS3 v3.0 are :

• Secured API based on the latest FastAPI and Pydantic versions
• New RBAC system with resource pools support
• Image manager to upload and manage images for Dynamips, Qemu and IOU
• Templates can be automatically created after images are uploaded
• Zstandard compression for importing/exporting projects
• ...

Download GNS3 v3.0.5 (May 14, 2025)

GNS3 3.0.5 release notes

GNS3 v3.0.5 fixes the following GNS3 GUI and GNS3 server issues of GNS3 v3.0.0 and adds the following features :

• GNS3 GUI :
  • Replace "Docker hub" by "Docker repository" because it is possible to use different repositories
  • Upgrade dependencies
  • Fix bring console in front when clicking on "Open all consoles".
  • Add -F arg to wmctrl.

• GNS 3 Server :
  • Bundle web-ui v3.0.5
  • Sync appliances
  • Use Ubuntu 24.04 LTS in Dockerfile.
  • Fix tests and require Qemu version >= 2.4
  • Fix adding pci_bridges to qemu vms
  • Resolve deprecation warnings of regex library
  • Remove OVMF_CODE_4M.secboot.fd and associated code
  • Add edk2-stable202502 UEFI firmwares and try to first use firmwares from the ovmf package if installed.
  • Prettify TPM error message
  • Fix bug in qemu_stdout message
  • Try to detect swtpm and AppArmor issue.
  • Fix Docker logs decoding.
  • Add delay after starting a Docker container and adding connections in uBridge.
  • Fix TypeError when reading Docker container logs.
  • Allow an image to be uploaded to the controller again even if it is already in the database
  • Fix controller not reporting an error if invalid options are passed to Qemu command line.
  • Replace "Docker hub" by "Docker repository" because it is possible to use different repositories
  • Fix unable to add NAT cloud after configuring “allowed_interfaces” in configuration file.
  • Fix interface information API endpoint for Cloud/NAT devices
  • Upgrade Jinja2 to v3.1.6. 
  • Fix packet capture for links connected to a cloud node. 
  • fix: check if remote-install.sh is being run as root

Download GNS3 v3.0.5 for Windows