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...]

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.

Does Public or Private make a difference to Cloud Security?

When we talk about Cloud Security, the main concept is to separate, as an example, Coke from Pepsi. This implies that Tenant’s cannot impact the availability of each others data, the integrity of that data, and the confidentiality of that data. But what does this actually mean? Does this apply to all types of clouds in the same way?

There are three types of cloud families: Private, Hybrid, Public. There are at least 3 types of clouds: SaaS, PaaS, and IaaS. Do the same rules for one cloud family work for all cloud families? as well as for the types of clouds?

I believe the answer is yes.

Christofer Hoff (@Beaker) and I had a short discussion on twitter the other day about the VMware Cloud Director (vCD) security guidance. We both felt it was a bit lite and missed the point of Secure Multi Tenancy. However, I feel even more strongly that people will implement what is in the vCD Guidance, vBlock Security Guidance, and the vSphere Hardening Guidance, and in effect have a completely insecure cloud. These three guides look at the problem as if they were singular entities and not as a whole.

The Virtualization Security Podcast on 9/16 was the first in a series of Virtual Desktop Security discussions we will be having. The special guest panelist was Bill McGee from Trend Micro who helped us to understand their implementation of Deep Security 7.5’s Anti-Virus and Anti-Malware (AV collectively) within the virtual desktop.

Trend Micro’s product makes use of enabling technology within vShield Endpoint to provide offloaded AV and Anti-Malware scanning of virtual machines using only one set of rules and one VM to do the actual scanning. Removing the per VM rule set and processing that currently takes place within the VM.

IO Virtualization Approaches: VMworld 2010 Review

There seem to be three styles of IO Virtualization (IOV) taking place within the virtual environment. At VMworld, the IO Virtualization companies were out and talking to people about their wares, products, and approaches to IO Virtualization. These three methods are:

* Converged Network Adapters used within Cisco UCS, HP Matrix, etc.
* Attached IOV top of rack devices such as the Xsigo Device
* PCIe Extenders

Each of these provide unique benefits to your virtual environment but which to use? First, we need to know what each of these approaches brings to the table.

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