The page provides a summarized and updated overview of simulation and virtualization tools suitable for the practice of networking educators, trainers or researchers. A B C D E F G H I J K L M N O P Q…

To change the Solar-Putty font size follow these steps: Open the Solar-Putty SSH client (for example by opening the console of a GNS3 device) Click on three dots in the upper left corner Select Settings, Go to the bottom menu…

Cisco Packet Tracer (PT) simulator allows performing site-to-site VPN exercises. However, the security feature of the router’s IOSs is disabled by default and has to be enabled. Then required VPN commands (crypto and etc.) will be available. The activation is…

Starting the GNS3 version 2.1.10, Solar-Putty is packaged as the default SSH client. However, how to integrate it to GNS3 later? As it was not selected during the GNS3 installation? Follow: 1. Download the Solar Putty application from https://www.solarwinds.com/free-tools/solar-putty. Puty…

Open vSwitch (OVS) is a multilayer (MLS) virtual switch licensed under the open-source Apache 2.0 license which is widely used in the field of virtual networking. With this open-source MLS switch, we can easily extend GNS3 switching capabilities. We can…

We are using GNS3 remote server deployment, where sometimes (typically at a higher CPU load) GSN3 opens some project as very zoomed out. And, GNS3 zoom does not react at all (problem with zoom-in / zoom-out). Solution => go to…

By Peter Hadač This article is all about how to prepare ASA 8.4 in GNS3 simulation (on Windows 10, but compatible with other OS ) using QEMU. nullAll is running inside of my Win 10 Pro 64-bit OS. Installed GNS 3….

In this post we describe how to run Fortigate FW VM appliance inside of the GNS3 (local or remote). GNS3In my case of version 2.1.1 running on a remote linux server (physical HW, not GSN3 VM).Fortigate VM Image for KVMIn…

The article describes how to run Junos vSRX box within UNL.  My working environment includes: Linux Mint 18.0 64bit Installed qemu package Working UNetLab installation (version 1.0.8) tested either within UNL over VMWare Player (https://nil-test.kis.fri.uniza.sk/network-simulation-and-modelling/unetlab/unified-network-lab-how-run-juniper-junos-vmx-141r1), UNL within LXC (https://nil-test.kis.fri.uniza.sk/network-simulation-and-modelling/unetlab/unified-network-lab-unetlab-installing-linux-container-lxc) Then…

The UNetLab is a tool which integrates several toolkits (dynamips, qemu, IOL) into the one solution were we are able to run several network systems (routers, switches, sensors, PCs …). The list of supported imeages is here: http://www.unetlab.com/documentation/supported-images/index.html.  Actually, Unetlab may…