Skip to main content

deperimeterization


In network security, deperimeterization is a strategy for protecting a company's data on multiple levels by using encryption and dynamic data-level authentication.


In the past, network devices were placed behind a firewall, and security efforts were focused on protecting company data at the perimeter and keeping intruders out. With the advent of ubiquitous connectivity and a mobile workforce, however, administrators began to question whether the traditional border model of IT security was practical.


The concept of deperimeterization was recognized early on by Paul Simmonds of the Jericho Forum, a non-profit group dedicated to "the development of open standards to enable secure, boundaryless information flows across organizations." As early as 2004, Simmonds foresaw that a hardened perimeter security strategy would be impossible to sustain and was fundamentally at odds with an agile business model.


He pointed out that in the early days of the internet, it would take a network administrator from one to six months to set up a new branch office. Tasks involved designing an extension to the corporate wide area network (WAN), negotiating contracts with telecom and Internet service providers (ISPs), installing a local area network (LAN), setting up a virtual private network (VPN) and installing telephones and desktop PCs to get the office up and running.


In contrast, with a deperimeterization model, the administrator simply needs to connect desktop PCs and VoIP telephones to the Internet. This approach follows the principle of least privilege (PoLP). Clients are given authorization to access specific pieces of encrypted data within the company's network on an as-needed basis.

Today, the concept of deperimeterization is closely aligned with the zero-trust model. First articulated in 2010 by John Kindervag, then a principal analyst at Forrester Research, the zero-trust security model is a philosophy for designing network security architecture in a way that withholds access until a user, device or even an individual packet has been thoroughly inspected and authenticated.

Comments

Post a Comment

Popular posts from this blog

Black swan

A  black swan event  is an incident that occurs randomly and unexpectedly and has wide-spread ramifications. The event is usually followed with reflection and a flawed rationalization that it was inevitable. The phrase illustrates the frailty of inductive reasoning and the danger of making sweeping generalizations from limited observations. The term came from the idea that if a man saw a thousand swans and they were all white, he might logically conclude that all swans are white. The flaw in his logic is that even when the premises are true, the conclusion can still be false. In other words, just because the man has never seen a black swan, it does not mean they do not exist. As Dutch explorers discovered in 1697, black swans are simply outliers -- rare birds, unknown to Europeans until Willem de Vlamingh and his crew visited Australia. Statistician Nassim Nicholas Taleb uses the phrase black swan as a metaphor for how humans deal with unpredictable events in his 2007...
Post a Comment
Read more

A Graphics Processing Unit (GPU)

A graphics processing unit (GPU) is a computer chip that performs rapid mathematical calculations, primarily for the purpose of rendering images. A GPU may be found integrated with a central processing unit (CPU) on the same circuit, on a graphics card or in the motherboard of a personal computer or server. In the early days of computing, the CPU performed these calculations. As more graphics-intensive applications such as AutoCAD were developed; however, their demands put strain on the CPU and degraded performance. GPUs came about as a way to offload those tasks from CPUs, freeing up their processing power. NVIDIA, AMD, Intel and ARM are some of the major players in the GPU market. GPU vs. CPU A graphics processing unit is able to render images more quickly than a central processing unit because of its parallel processing architecture, which allows it to perform multiple calculations at the same time. A single CPU does not have this capability, although multi...
Post a Comment
Read more

6G (sixth-generation wireless)

6G (sixth-generation wireless) is the successor to 5G cellular technology. 6G networks will be able to use higher frequencies than 5G networks and provide substantially higher capacity and much lower latency. One of the goals of the 6G Internet will be to support one micro-second latency communications, representing 1,000 times faster -- or 1/1000th the latency -- than one millisecond throughput. The 6G technology market is expected to facilitate large improvements in the areas of imaging, presence technology and location awareness. Working in conjunction with AI, the computational infrastructure of 6G will be able to autonomously determine the best location for computing to occur; this includes decisions about data storage, processing and sharing.  Advantages of 6G over 5G 6G is expected to support 1 terabyte per second (Tbps) speeds. This level of capacity and latency will be unprecedented and wi...
Post a Comment
Read more