Catbird comes as a VM appliance that has a Web front-end console, along with VM agents that plug into VMware’s vCenter. It puts a single agent per network switch on each monitored and controlled ESX/ESXi hypervisor host. This is so they can capture the network traffic on the virtual equivalent of a network span port. Catbird comes with six policy categories, five pre-set compliance rule sets and four report types. The new v6.0 includes six role-based access controls. Catbird costs $14,500 for 10 ESX sockets per year, which is what the vendor recommended for 250 individual VMs. There is no built-in support for Amazon Web Services.