ClearOS CE appliance
ClearOS is an operating system for your Server, Network, and Gateway systems. It is designed for homes, small to medium businesses, and distributed environments. ClearOS is commonly known as the Next Generation Small Business Server, while including indispensable Gateway and Networking functionality. It delivers a powerful IT solution with an elegant user interface that is completely web-based. Simply put.. ClearOS is the new way of delivering IT.
More informations on https://www.clearos.com/clearfoundation/software/clearos-7-community
Follow the installer.
RAM: 1024 MB
You need KVM enable on your machine or in the GNS3 VM.
Documentation for using the appliance is available on https://www.clearos.com/resources/documentation/clearos-7-documentation-overview