Network types in KVM (NAT, isolated and bridged)

In KVM, network virtualization is mainly managed through libvirt, which lets us create and administer various kinds of virtual networks to which our virtual machines connect. Understanding the available network types is key to properly configuring guest connectivity and the host interaction. There are two broad categories of networks in KVM: Private virtual networks: Internal networks isolated from the outside, managed via virtual bridges created by libvirt. Bridged networks: Networks that connect virtual machines directly to the host’s physical network. Private virtual networks These networks are created on the host and provide a controlled environment for virtual machines. They fall into three main types: