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virtual securityWhen it comes to deploying security in a virtual environment, some industry professionals draw a blank–or, worse, they think that it’s necessary to replace existing physical security protocols with virtual substitutes. This is not true.

In fact, the best approach to use when viewing virtual security is a logical one. Consider this: A jewelry store owner who expands the physical location or who opens a new facility would not try to use his/her current security force to protect the new location, nor would the owner secure the new location by trying to stretch the current security force between two facilities and simply hope that the depleted resources will cover the need. Both sites need to be secure.

Considering the current, overwhelming surge in virtual as-a-service solutions, knowing how and when to apply virtual security measures like firewalls has become a crucial consideration for businesses. This is especially due to the fact that according to industry specialists, over one-fifth of all VPN (virtual private network) security will be deployed in a virtual format by the end of the year.

Layered Security

Companies already understand the flexibility and cost-saving advantages of moving information and even key infrastructure to the cloud (hence, the rapid growth). That said, virtual security protocols should not be an either/or dilemma; they should be employed in a layered defense. The physical systems already in place should be supported with virtual firewalls—not replaced with them—depending on the level of the workload requirements.

The reasons for this layered defense are abundant. Not only does it secure the virtual aspects of the data system, but the same ease of alteration and on-demand access that is available in a virtual environment is accessible with virtual firewalls. Companies can adjust deployment according to specific needs, which allows them to better control financial commitments.

Deployment Confusion

The issue of deployment confusion has been discussed at length by industry experts. Keeping pace with the rapidly expanding network services available in a virtual environment means finding ways to secure that activity from threats.

Therefore, deployment should depend on the same workload and accessibility requirements that have determined the current physical security measures.

Notably, there are two basic types of virtual firewalls:

  • Introspective: This type resides within the hypervisor side of each virtual NIC (network interface card). Although it offers a well-managed way to keep virtual machines protected, it is limited in availability at this time.
  • Edge: This is the most common form of virtual firewalls. These reside between two or more virtual portgroups or switches. The beneficial aspect of this type of virtual security is that companies can deploy them at the “edge” of their data center or between trust zones in a cloud environment, depending on their workload and throughput activity.

Rules of the Game

In general, there are three fundamental rules when it comes to adding virtual security services to a network:

  1. Deploy virtual firewalls to enhance the depth of network safety in conjunction with the physical securities already in place.
  2. Know the specifications of a virtual firewall. (The specs for physical firewalls are outlined; virtual ones should be outlined, too.)
  3. Don’t limit virtual security to one type (or breed) of firewall. (Requirements play an essential role in the types and amount of firewall protection needed for a network.)

 
With the changing environment of virtual services, companies can discover the best means of keeping their networks secure by incorporating virtual security protocols. The investment is well worth it when the risks are considered, and the faster, more adaptive role that these protocols play can make a huge difference in security compliance.

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