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• Hardware And Software Of A Computer

Firewalls, both hardware and software, protect computers from hackers and other online threats by blocking dangerous pieces of data from reaching the system. While hardware firewalls offer network-wide protection from external threats, software firewalls installed on individual computers can more closely inspect data, and can block specific programs from even sending data to the Internet.

On networks with high security concerns, combining both kinds of firewalls provides a more complete safety net. Hardware FirewallsA hardware firewall sits between your local network of computers and the Internet.

The firewall will inspect all the data that comes in from the Internet, passing along the safe data packets while blocking the potentially dangerous packets. In order to properly protect a network without hindering performance, hardware firewalls require expert setup, and so may not be a feasible solution for companies without a dedicated IT department. For businesses with many computers, however, being able to control network security from one single device simplifies the job. Software FirewallsSoftware firewalls are installed on individual computers on a network.

Unlike hardware firewalls, software firewalls can easily distinguish between programs on a computer. This lets them allow data to one program while blocking another. Software firewalls can also filter outgoing data, as well as remote responses to outgoing requests. The major downside to software firewalls for a business is their upkeep: they require installation, updating and administration on each individual computer. RoutersIn order to share an Internet connection between multiple computers, routers must distinguish which pieces of data need to go to which computer. The process of separating the data acts as a kind of firewall: if unwanted data comes in, the router will not identify it as belonging to any computer, and thus will discard it. This level of protection serves adequately for home use; along with a software firewall, it's also enough for many business networks that don't require high security.

However, routers generally lack the options and advanced features that dedicated hardware firewalls offer.

Hardware And Software Of A Computer

Hardware represents the physical and tangible components of a computer, i.e. The components that can be seen and touched.Examples of Hardware are the following −.Input devices − keyboard, mouse, etc.Output devices − printer, monitor, etc.Secondary storage devices − Hard disk, CD, DVD, etc.Internal components − CPU, motherboard, RAM, etc.Relationship between Hardware and Software.Hardware and software are mutually dependent on each other.