1. A method for managing firewall requirements related to a virtualized application by a cloud management entity having a processing engine, comprising: responsive to determining, by the processing engine, that a virtualized application, associated with a first plurality of application virtual machines and a second plurality of firewall virtual machines, requires an increased number of application virtual machines in the first plurality, instantiating an application virtual machine; comparing a bandwidth capacity of the required increased number of application virtual machines in the first plurality to a bandwidth capacity of the firewall virtual machines in the second plurality to determine whether a firewall ratio is exceeded by the increased number of application virtual machines; and responsive to determining, by the processing engine, that the firewall ratio is exceeded, instantiating a firewall virtual machine.