VMware vShield is a product developed through the Blue Lane acquisition last year by VMware. This security product sits between the hypervisor and the guest VM and is installed as a virtual appliance which integrates with vCenter. To install vShield with in the virtual environment a user will need to upgrade the virtual environment to vSphere to support the implementation.
Configure vShield zones to protect and monitor your virtual environment in a multitude of ways.
Depending on your view in vCenter will determine how you secure your environment:
Server View: Allows you to set a security zone at the Data Centre, cluster, resource pool, etc
Network and Flow: Allows for securing at the vSwitch, VLAN or protocol level TCP, UDP, port number, etc
In addition vShield also gives you stateful packet protection across vMotion VM’s.

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