Virtual infrastructures vary greatly from traditional physical infrastructures, and so must your security measures. The key to creating a solid layer of protection for virtual servers and the VMs that run on them is to divide the infrastructure into two clearly separate components: the resource pool and virtual service offerings. Doing so can help reduce the overall attack surface. 

In Chapter 5 of the Advanced Virtualization e-book, security experts Danielle Ruest and Nelson Ruest explain how to identify, map out and prevent some of the most common resource pool threats. The authors also debunk five common security misconceptions of server virtualization.