To add a source (ex: 192.168.2.0/24) to a zone (here trusted) permanently, type:
firewall-cmd --permanent --zone=trusted --add-source=192.168.2.0/24
firewall-cmd --reload
Getting the Screen-Number:
virsh vncdisplay vmwin7
netstat -tln | grep :59
192.168.2.22:5900
kvmhost:5900
spice://kvmhost:5900
virt-install --connect qemu:///system \
-n vmwin7 \
-r 512 \
--vcpus=1 \
--disk path=/vm/vmwin7.img,size=10 \
--graphics spice,listen=0.0.0.0 \
--noautoconsole \
--os-type windows \
--os-variant win7 \
--accelerate \
--network=bridge:virbr0 \
--hvm \
--cdrom /vm/03_Installation-Medium/X17-58997.iso
virsh destroy vmwin7
virsh undefine vmwin7
rm -rf /vm/vmwin.img