The Virtualization Practice

Author Archive for Edward Haletky

Edward Haletky
Edward HaletkyEdward L. Haletky, aka Texiwill, is the author of VMware vSphere(TM) and Virtual Infrastructure Security: Securing the Virtual Environment as well as VMware ESX and ESXi in the Enterprise: Planning Deployment of Virtualization Servers, 2nd Edition. Edward owns AstroArch Consulting, Inc., providing virtualization, security, network consulting and development and The Virtualization Practice where he is also an Analyst. Edward is the Moderator and Host of the Virtualization Security Podcast as well as a guru and moderator for the VMware Communities Forums, providing answers to security and configuration questions. Edward is working on new books on Virtualization. [All Papers/Publications...]

Blade Physical-Virtual Networking and Virtualization Security

I have been thinking about blades and virtualization security for some time spurred on by a conversation with Brad Hedlund six months ago. Nearly all my customers use Blades and virtualization security is a big concern to them. In my Rethinking vNetwork Security article, I touched on some of the issues in response to Brad’s comments a while back. I would like to now expand that discussion to blades.

There are three sets of blade enclosures I would like to discuss, those that use pass thru networking, those that use standard switching fabric within the enclosures, and those that use flexible interconnects such as HP Flex-10 and Cisco Palo adapters. The last is the so called physical-virtual network device.

In the last Virtualization Security podcast on 12/2 we had with us members of the PCI DSS Virtualization Special Interest Group (SIG). Kurt Roemer of Citrix and Hemma Prafullchandra of HyTrust joined us to discuss the differences to the PCI DSS 2.0 with respect to virtualization. In essence, PCI DSS explicitly calls out the need to bring virtualization, people, and processes in scope.

As we discussed in a previous article, the PCI DSS 2.0 does not state exactly what needs to be assessed within the virtual environment, or even what part of the virtual environment is a concern of each aspect of the PCI DSS. What the PCI DSS 2.0 does do is change the language, however subtle, that technologies employing shared resources are now acceptable.

Many times we virtualization experts push for backups without the agents as these backups tend to be in our opinion, cleaner and faster. But what if you could get the benefits of your existing backup tools (such as Tivoli) but gain the power and advantages of using all the possibilities within the virtual environment. For VMware vSphere this is possible using the Pancetera backup tools.

The PCI Security Standards Council published its latest PCI guidance in the form of PCI DSS 2.0, but quickly followed up with the document Navigating the PCI DSS v2.0. The Navigating document is very important to those who have virtual systems as it contains the basic guidance about virtualization while PCI DSS 2.0 does not provide anything specifically geared towards virtualization. However, there is an adjunct document that does layout PCIs thoughts on virtualization. This is stated within the Navigating the PCI DSS (v2.0) document.

The Virtualization Security Podcast on 10/21 was the third in a series of Virtual Desktop Security discussions we are having. The special guest panelist was Chris Mayers of one of the Chief Security Architects for Citrix, the makers of XenServer, XenClient, and the FlexCast solutions. FlexCast provides an all encompassing method to provide virtual desktop and applications that include the following mechanisms:

Let us look at each of these mechanisms in a bit of detail then discuss how they work to provide Security and how to secure them.

The Virtualization Security Podcast on 10/7 was the second in a series of Virtual Desktop Security discussions we will are having. The special guest panelist was Simon Graham of Virtual Computer, the makers of NxTop a client side hypervisor based on Xen. On this podcast, we went into the details of NxTop.

The engineers at Virtual Computer have thought about nearly everything when it comes to a Client Hypervisor. NxTop operates as a standalone or as a centrally managed client hypervisor. The difference is fairly stark. I feel that most people in the Enterprise unless this is a one off situation would want to use the managed client hypervisor.

Google Circle
Join my Circle on Google+

Plugin by Social Author Bio