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Best of Times, Worst of Times: Is Virtualization in the Data Center a Problem or an Opportunity?

As I travel the world, I ask my customers two simple questions:

First, are you virtualizing your data center? (Universally the answer is yes.)

Second, have you deployed any virtual security solution? (Universally the answer is no.)

Wow. How can this be? Does a virtual data center not need security? Not a chance. It needs security more than ever. Most customers are confining their virtualized infrastructure into secure zones, or virtual local area networks (VLANs). That’s useful for a first phase, but excessive VLAN segmentation holds us back from achieving the efficiencies of the utility computing model—and it also gets really complicated really quickly.

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Bitcoin Security Architecture: A Brief Overview

Bitcoin is an emerging technical and economic phenomenon, based upon a self-published paper by Satoshi Nakamoto. Many sites have taken notice of Bitcoin and have published some very thoughtful “what is Bitcoin,” “How-to get started” documentation. But the resources available to address Bitcoin are few, and primarily oriented toward enthusiasts, casual hobbyists, or those interested in making and securing a profit off of Bitcoin generation (“mining”). In this post, we make an effort to extend the Bitcoin security body of knowledge, but from an organizational perspective: what are the risks associated with adopting Bitcoin, intentionally or unintentionally.

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Repackage or Reimagine? Virtualization and the Potential for a New Security Regime

I started my professional life using a mainframe. Back then the people running the mainframe world were known as the “data center guys.” These guys had a certain DNA combination that created an expanding waistline, a retreating hairline, a belt buckle the size (and shape) of Texas, and a penchant for big iron. This crowd ruled the data center for a long time, but virtualization in the data center is now driving a radical shift that seems to be changing everything.

Instead of having an application running on a dedicated tower of hardware power, apps are now free from the limitations of the infrastructure underneath. Hardware is evolving rapidly into dynamic blocks of utility computing (and storage and networking) that can be standardized, widely deployed, and efficiently utilized. This change is good news, as it can cut data center costs by 50 percent or more. If the big iron crowd from the mainframe days doesn’t adopt this fundamental shift, they’ll be hanging up their Texas belt buckles in the computer museum next to the punch card, the VAX, and a replica of the ILLIAC.

The same shift is also happening with security. Since most security products are primarily software based, it is not much of an effort to repackage these products as “virtual security.” But merely repackaging security products misses the point. Today’s security architecture was built at a time when the workplace was very different than it is today. End users would come into the office and work on a PC, which sat on a desk and was connected by a wire to a port on the wall. At this time, the IP address was a pretty good proxy for the user’s identity. And applications would each run on their own tower of power—hardware that was often running in a unique data center rack or racks. Therefore segmenting the data center in this era was relatively easy; it was based on IP address ranges and, later, on virtual LANs (or VLANs).

But the workplace of today (and tomorrow) looks very different. We’re no longer tied to a specific lump of hardware. We expect to access our apps in the cloud from any device, at any time, from anywhere. Therefore the IP address is a less useful means of defining data center boundaries.

We need a new capability that allows the security team to maintain its meaningful policy enforcement capability, while enabling that policy to be relevant across all infrastructure—physical and virtual. An important nuance here is that the policy should be consistently enforced across physical infrastructure as well as across virtual infrastructure from any virtualization vendor. This level of enforcement requires special access to the hypervisor. Without this access, a virtual security solution can’t see traffic between two virtual machines (VMs).

How the various security vendors plan to address hypervisor access is still an open question. And how that question gets answered is significant—and is likely to reshape the security vendor landscape.

So as we consider various virtual security solutions, simply repackaging today’s security software as a VM running in a cluster of other VMs is extremely uninteresting. Instead we must reimagine the way that we build and deploy security solutions. How do we bridge the policy model from today’s hardware-based firewalls to the virtual firewalls of tomorrow? How can we maintain a separation of duties, so that security policy definition is separate from traditional network operations? And how will we orchestrate all of these components in the dynamic, nimble data center of tomorrow? These are not small issues. But of course, that’s what makes my job fun.

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Security @ Cisco Live!

This year, Cisco Live! comes to Las Vegas where a record breaking 14,000 customers, partners and technical experts will converge on the Mandalay Bay Convention Center for five days of rich, deep interaction and discussion around all aspects of networking, including security.

Main Cisco Booth at Cisco Live!

Come see TrustSec, ISE and other Security Demos at the Main Cisco Booth at Cisco Live!

At the Cisco main booth (Booth 1349) we are going to have a number of security demos, including:

The Cisco SecureX Architecture – two-part demo of how a holistic approach can deliver better security.

  • Part 1: Cisco Cius and Apple iPad in a HIPAA/medical situation where MACSec, AnyConnect and other technologies are shown enabling secure data exchange with better security, compliance and confidentiality.
  • Part 2: With access control enabled with TrustSec and ISE, we illustrate virtualized desktop capabilities on Cius and other endpoints, as well as content security with Cisco IronPort and ScanSafe.

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Twenty Years to Build a Reputation…

… and five minutes to ruin it.
- Warren Buffett, Chairman and CEO, Berkshire Hathaway

Is it just me, or are corporate scandals—really big ones—becoming more frequent? It seems that I read every week about companies for whom millions of dollars in shareholder value and years of good will were erased in days—not just in legal fees, recalls or liability payouts, but in brand value:  that conceptual, priceless entity that helps make the best companies into household names.  The situation seems to be particularly perilous for custodians of customer data, and those whose value is highly invested in their brand.  Here are some reasons why this may be so:

Some recent challenges faced by multinationals have included:

  • Environmental damage
  • Product safety
  • Data loss
  • Supply chain/partner practices
  • Corruption and ethics
  • Regulatory and accounting violations

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