simple virt-manager setup

[Felix Natter <fnatter@gmx.net>]

Dear debian users,

regarding virt-manager (qemu/kvm):

Can I safely choose the "NAT" network type for a new VM 
in virt-manager (Debian12): Can I safely say yes to
"Do you want to bring it up?"? (is it undoable?)

If I choose NAT, can multiple VMs connect to each other
and with the host?

If not, can you suggest a tutorial for creating the necessary
bridge device for type=bridge?
(I would like to avoid making many changes that I don't understand
to a productive server)

Many Thanks and Best Regards,
Felix
-- 
Felix Natter