VM/Settings/Processors: enable Virtual Intel VT-X/EPT or AMD-V/RVI.
yum install qemu-kvm qemu-img virt-manager libvirt libvirt-python \ libvirt-client virt-install virt-viewer bridge-utils
network install https://mirror.senecacollege.ca/centos/7/os/x86_64/ or http://mirror.netflash.net/centos/7/os/x86_64/ 2G ram 10G drive NAT lin1
To disable and remove firewalld, issue the following commands:
systemctl disable firewalld
systemctl stop firewalld
yum remove firewalld
To install and enable the IPTables services, issue the following commands: yum install iptables-services systemctl enable iptables systemctl start iptables