GNS3
GNS3
2.2.6

5.0

GNS3 free download for Mac

GNS3

2.2.6
26 March 2020

Graphical network simulator that allows simulation of complex networks.

Overview

GNS3 is a graphical network simulator that allows simulation of complex networks.

To allow complete simulations, GNS3 is strongly linked with:

  • Dynamips, the core program that allows Cisco IOS emulation
  • Dynagen, a text-based front-end for Dynamips
  • Qemu, a generic and open source machine emulator and virtualizer
  • GNS3 is an excellent complementary tool to real labs for network engineers, administrators and people wanting to pass certifications such as CCNA, CCNP, CCIP, CCIE, JNCIA, JNCIS, JNCIE
Features:
  • Design of high quality and complex network topologies
  • Emulation of many Cisco IOS router platforms, IPS, PIX and ASA firewalls, JunOS
  • Simulation of simple Ethernet, ATM and Frame Relay switches
  • Connection of the simulated network to the real world!
  • Packet capture using Wireshark
  • Important notice: users have to provide their own IOS/IPS/PIX/ASA/JunOS to use with GNS3

What's new in GNS3

Version 2.2.6:
GUI:
  • Prevent locked drawings to be deleted
  • Fix issues with empty project variables
  • Upgrade psutil to version 5.6.6 due to CVE-2019-18874 https://github.com/advisories/GHSA-qfc5-mcwq-26q8
  • Use existing README.txt if existing when exporting portable project. Fixes GNS3/gns3-server#1724
  • Allow creation of a diskless Qemu VMs
  • Re-enable "create new version" in appliance wizard
  • Fix unable to load project from project library
  • Fix some permission denied errors when loading remote project
  • Add 'Royal TS V5' to predefined console list
  • Disallow invalid grid sized
  • Check if hostname is blank
  • Add nvme disk interface and fix scsi disk interface for Qemu VMs
  • Add latest Qemu nic models
  • Upgrade Qt version to 5.14.1
Server:
  • Remove --local when starting Docker dev server
  • Release 2020.1.0-alpha.1
  • Monitor ubrige processes
  • Add Xvnc command to the VNC servers list
  • Allow controller to reconnect to compute if communication is lost
  • Improvement of support for docker USER directive
  • Fix cannot delete Dynamips router the content of the "usage" field
  • Prevent locked drawings to be deleted
  • Fix issues with empty project variables
  • Upgrade psutil to version 5.6.6 due to CVE-2019-18874 https://github.com/advisories/GHSA-qfc5-mcwq-26q8
  • Remove 'format=raw' from the Qemu options of the disk interfaces
  • Allocate application IDs for IOU nodes on the controller. An application ID is used by IOU to generate its interface Mac addresses. They must be unique across all opened projects sharing the same computes to avoid Mac address collisions
  • Require VirtualBox >= 6.0 on AMD and >= 6.1 on Intel processors (for GNS3 VM only)
  • Add nvme disk interface and fix scsi disk interface for Qemu VMs
  • Disallow using "legacy networking mode" with Qemu >= 2.9.0
  • Add latest Qemu nic models
  • Attempt to fix error when loading wmi module
  • Handle "aborted" state for VirtualBox VMs
  • Change how Hyper-V VMs are found

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