10-04-2017, 09:09 PM
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This article is presented by:
ADEWOLE ADEBIYI CLEMENT
DATA SECURITY IN A NETWORK TRANSMISSION
ABSTRACT
This paper gives a topical overview of data security in network transmission. Internet network data security has assumed great importance since the quantum of mission critical data that is being compromised has assumed great proportions. In fact, internet network data security is now a leading cause of national security concerns worldwide.
Even in corporate , internet network data security topics in the form of intrusions into corporate mission critical data often invades the corporate boardrooms, where black coated directors (who have hardly used a computer in their life) debate on internet networking security strategies.
INTRODUCTION
The requirements of data security have undergone three major changes in the last decades. The first major change was the introduction of the computer. The need for protecting files and information became evident. Collection of tools designed to protect data and to avoid hacker attacks has the generic name computer security. The second major change was the introduction of distributed systems, networks and communication facilities for data communication. Network security measures are needed to protect data during transmission. The third change is the current, rapid development of wireless networks and mobile communications. Wireless security is therefore of high priority today.
DEFINITIONS OF TERMS
Address mapping: By translating network addresses from one format to another, this methodology permits different protocols to operate interchangeably.
Address mask: A bit combination descriptor identifying which portion of an address refers to the network or subnet and which part refers to the host sometimes simply called the mask.
Area: A logical, rather than physical, set of segments along with their attached devices. Areas are commonly connected to others using routers to create a single autonomous system.
ATM (Asynchronous Transfer Mode): The international standard, identified by fixed-length 53-byte cells, for transmitting cells in multiple service systems, such as voice, video, or data. Transit delays are reduced because the fixed-length cells permit processing to occur in the hardware. ATM is designed to maximize the benefits of high-speed transmission media, such as SONET, E3, and T3.
Bandwidth: The gap between the highest and lowest frequencies employed by network signals. More commonly, it refers to the rated throughput capacity of a network protocol or medium.
