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Introduction of Firewall in Computer Network

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 Introduction of Firewall in Computer Network A firewall is a network security device, either hardware or software-based, which monitors all incoming and outgoing traffic and based on a defined set of security rules it accepts, rejects or drops that specific traffic. Accept :  allow the traffic Reject :  block the traffic but reply with an “unreachable error” Drop :  block the traffic with no reply A firewall establishes a barrier between secured internal networks and outside untrusted network, such as the Internet. History and Need for Firewall Before Firewalls, network security was performed by Access Control Lists (ACLs) residing on routers. ACLs are rules that determine whether network access should be granted or denied to specific IP address. But ACLs cannot determine the nature of the packet it is blocking. Also, ACL alone does not have the capacity to keep threats out of the network. Hence, the Firewall was introduced. Connectivity to the Internet is no l...
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Internet of Everything

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 Internet of Everything Internet Of Everything (IoE) has been the one of  the trendiest topic lately and it’s here, IoE is the upcoming most innovative and Ubiquitous technology advancement which is going to make networked connections more relevant and valuable than ever before. Turning information into action that creates new capabilities, richer experiences and unprecedented economic opportunities for businesses, individuals and countries. Technically IoE refers to billions of devices and consumer products connected to the internet in an intelligent networked environment with expanded digital features. It is basically a philosophy in which our technology future is compromised of different types of appliances, devices, and things connected to the global internet. As of now the internet connection is only restricted to Phone’s/Tablet’s, PC’s and a handful of other devices but the idea behind IoE is that in the future, Machines will become more intelligent and cognitive by havi...
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The Internet and the Web

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 The Internet and the Web 1. The Internet:   In simplest terms, the Internet is a global network comprised of smaller networks that are interconnected using  standardized  communication protocols. The Internet standards describe a framework known as the Internet protocol suite. This model divides methods into a  layered system of protocols.   These layers are as follows:  Application layer (highest) –  concerned with the data(URL, type, etc.). This is where HTTP, HTTPS, etc., comes in.    Transport layer –  responsible for end-to-end communication over a network.    Network layer –  provides data route.    The Internet provides a variety of information and communication facilities; contains forums, databases, email, hypertext, etc. It consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking techn...
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