Article Side

Online Article Directory!

Hello Guest! Login or Register to submit articles!

Important Web Basics Affecting Your Computer Security

By Peter McKiel Subscribe to RSS | November 30th 2011 | Views:
loading
 
  



With our increasing dependence on computing devices and the Internet to run our lives, it’s essential to have the right know-how to keep your personal information protected against malware theft.

Part 1 of this guide series looked at the workings of Hosts, IP addresses, DNS, ISP’s and the Backbone.

The following guide will continue to explore some key Web terms to better enable you to keep your computer or network safe. We will cover protocols and related activities which enable computers to talk to each other, as this will help you understand how they can be used against you by cyber criminals.

Protocols - TCP/IP

Protocols are the term given to the set of conventions governing the treatment and formatting of data in electronic communications systems. Basically, this boils down to the fact that without protocols, computers cannot communicate with each other online.

To clarify further with an analogy - if you call an orange a banana and I call it a pear, we would never be able to understand each other - a common agreement has to be made as to what we will both call it.

Translated to computers and the Internet, different organisations have their own proprietary way of formatting and transmitting data, so there has to be a protocol for all computers to speak the same language.

Transmission Control Protocol Internet Protocol (TCP/IP) is the accepted set of communication standards that act as a ‘universal translator’ if you will. It comes packaged by default with all major computer operating systems.

As we have previously discussed in the last guide, IP relates to the unique address of your computer which identifies it on the Internet so that communications can reach you. TCP is responsible for breaking data into smaller chunks called packets for easier transfer between different computing devices. It then reassembles these multiple packets in the correct sequence and performs error-checking to ensure that the complete data message arrives intact at its destination.

DHCP

In the early days of the Internet, IP addresses were manually coded to each computer. But once the web exploded in popularity it became extremely tricky to track which IP addresses were already in use and which ones were freed up when a computer was removed from the network.

Dynamic Host Configuration Protocol (DHCP) was then created to automate this process. Thus, a DHCP server is given a block of IP addresses that it manages. In this way, your Host (which delivers web pages) will contact the DHCP server when you turn your computer on to request an IP address. The DHCP server will then check its database of IP addresses and find one that is not in use to assign to your Host.

NAT

As more and more people in the world are now using computers online, inevitably the issue arises of IP addresses running short. While a newer IP protocol is under development which will allow for exponential increases in available IP addresses, in the mean time something called Network Address Translation (NAT) is used to tackle this problem. NAT essentially reduces the IP addresses on a local network to a single IP for external use.

To clarify further, without NAT, a company with 1000 computers that wanted all of them to be connected with the Internet would need to have 1000 separate public IP addresses. But using NAT, the company will only need 1 public IP address recognised on the Web, while all the computers on its internal network will still be uniquely recognised by each other but their IP addresses will be hidden from external view.

This hiding of internal IP addresses not only allows for more Hosts to share the Internet, it also adds an extra layer of security. This is because by not allowing the outside world to know the exact IP addresses on your internal network, you take away a crucial piece of information that cyber criminals could use to hack your system.

Conclusion

In summary of the above guide, you will now know that protocols are what allow for standardised communication between computers, that TCP/IP is the collection of these protocols and that NAT gives added cyber protection by allowing computers on the same network to hide their unique IP addresses from the outside world. With all this complexity going on in the background to facilitate the electronic transfer of information, you can also now understand that antivirus software acts as a brave soldier guarding against unauthorised breaches while computing devices communicate with each other.

Peter McKiel - About Author:
Peter McKiel is an independent IT Consultant. He research on antivirus software

Share on Facebook Tweet It Stumbleupon this post This post is delicious !

Article Source:
http://www.articleside.com/software-articles/important-web-basics-affecting-your-computer-security.htm

Related Software Articles Subscribe to RSS

Why you need to use Recruitment software
Published by Maria Warne on June 17th 2012 | Software
Recruitment software has completely revolutionized the way HR department operates in any business. T...
 
Go with service management software to gain good business control
Published by Martin Tuner on December 8th 2011 | Software
Providing top notch services to clients is one of the key factors that can determine the success of ...
 
Offshore software development companies and various technology platforms
Published by Elan Technologies on January 2nd 2012 | Software
Software development companies have to constantly update their skills with the changing technology p...
 
Infosys Technologies delivers broad range of software outsourcing services in India
Published by Williemcintosh on July 7th 2012 | Software
The span of software outsourcing services features custom software development, technology and also ...
 
Offshore software Development is the New Normal!
Published by Elan Technologies on December 2nd 2011 | Software
Offshore software development primarily referred to cheap labor and involved maintenance work predom...
 
Three queries to answer before selecting recycling software
Published by Angel on March 27th 2012 | Software
An individual involved in scrap business finds an able ally in the form of recycling software. But, ...
 
Is it difficult for a recycling unit to find the best recycling software
Published by Angel on May 16th 2012 | Software
While a recycling unit wants to implement the best recycling software, it becomes difficult for the ...
 
Meeting business needs through CRM software
Published by Antony Wilmer on January 10th 2012 | Software
CRM software has become the need of hour as it helps in business expansion. It is also important as ...
 
Amazon promises software update for Kindle Fire problems
Published by Ritika Sharma on December 14th 2011 | Software
Amazon.com Inc. has said that it would soon be coming out with a software update for the Kindle as a...
 
How does an antivirus software work?
Published by Alexs on February 24th 2012 | Software
An antivirus software is a computer program that is used to scan files that will locate and remove c...
 
Adopting the use of Internet monitoring software
Published by Erikhornung on December 29th 2011 | Software
Internet monitoring software helps companies to keep a check on their employees, whether they are ma...
 
An Objective Look at How Employee scheduling software Ensures Project Success
Published by David Hog on March 27th 2012 | Software
The use of tried proven resource scheduling software ensures project success regardless of the proje...
 
Factors to consider while choosing Time clock software
Published by Hope It Helps on July 30th 2012 | Software
Are you looking out for employee time clock software? If your answer is “Yes” then there are a l...
 
Custom software services are best offered in Scottsdale
Published by Liza Andy on January 24th 2012 | Software
In case, we are selling mass products under the banner of mass marketing, thus, there are no doubts ...
 
What can you accomplish with E-scrap recycling management software?
Published by Angel on July 11th 2012 | Software
For the entrepreneur involved in the e-waste business, E-scrap recycling software fills the void wit...
 
All about the real estate software
Published by Ivon Lerdorf on February 7th 2012 | Software
Real estate deals are time taking and should be done meticulously. Due to advancement of technology ...
 
What is so special about waste management software
Published by Angel on December 20th 2011 | Software
Waste management software provides the ideal solution for waste management sectors. But here we have...
 
Leading company offering Custom software development services to its clients
Published by Coloprilreview on November 25th 2011 | Software
Unique Solutions of Advanced Technologies has exceptional skill and expertise to provide Custom soft...
 
Best Ecommerce software solutions
Published by Paul on February 15th 2012 | Software
Ecommerce software solutions include Zen Car, OS Commerce and Magento, among others. These softwares...
 
Simply recruitment tasks with recruitment agency software
Published by Roger Lopez on March 20th 2012 | Software
Altamira Recruiting software is a highly customizable, multi-language, SEO friendly online employmen...