FIREWALL
Firewall is a system to protect computers that protect all types of computers and its networks from intruders, hackers and malware. Firewall protects our computer from invasive software that secretly comes inside our computers and passes all personal details to the hackers who send the software that takes very bad advantage of it.
Firewall is a kind of security scheme which either stays as a software programs or as a hardware device, so whenever our computer connects to the internet, then this firewall prevents the traffic coming towards our computer. is.
For example,
let me tell you that whenever we go to a website using the internet in the computer, or watch some videos, as well as download them or anything else on the Internet. When working, in such a way, whatever traffic is coming towards our computer stops the firewall, it creates a wall in our computer network so that any unwanted software comes in and automatically installs in the computer. Should it happen Oi unwanted comes not in files Computer gets to the attack because of the virus on Computer and all that data you can delete.
For example,
let me tell you that whenever we go to a website using the internet in the computer, or watch some videos, as well as download them or anything else on the Internet. When working, in such a way, whatever traffic is coming towards our computer stops the firewall, it creates a wall in our computer network so that any unwanted software comes in and automatically installs in the computer. Should it happen Oi unwanted comes not in files Computer gets to the attack because of the virus on Computer and all that data you can delete.
Firewall only gives space for those things that we allow users to come in. Apart from this, no malware or virus is allowed inside. In the same way, if a virus is already present in our computer and many computers are connected together in a network in a room, then the firewall prevents the virus of one computer from reaching other computers. This means that the firewall performs security work on both sides.
Types of Firewall
There are two types of firewall, one is Software Firewall and the other is Hardware Firewall.
1 # Hardware Firewall
Hardware Firewall is already present in all the routers these days, whose job is to prevent the virus from going from one computer to another. For example, suppose 10 computers in a room are connected to the same network and the firewall has been enabled in the router or modem being used there, then all the computers are connected with that router. The firewall automatically starts working. Whenever anything is done on the Internet through computers, the firewall there keeps computers safe from viruses and malware.Every request that comes out of the computer comes out in the form of a data packet and the ID of the network is also attached to it, so whenever the reply to that request comes from the server, then the same network ID comes connected with that packet. The firewall knows that the data is correct. Apart from this, if any other packet tries to enter inside with that packet, then the firewall stops it.
The second task of the firewall is that if a virus comes from anywhere in a computer, then the virus cannot get out of that computer and reach the other computer, the firewall also takes care of it.
2 # Software Firewall
In newer generations of Windows Operating Systems like Windows 7, 8, 10, Vista, XP etc., the firewall is already inbuilt and is by default "on" so that the computer is completely protected. If you want, you can also change it according to your need by looking at its settings in computers. Apart from this, many antivirus are also present in the internet such as Avast, McAfee, Norton, QuickHeal Istadi, all these also have the same firewall work.Whenever we install new software or games in our computers, a popup box appears in our computer, in which the firewall asks for permission from the user whether you have to install this program in your computer because Windows firewall blocked this program. Has done, so if we want, we can install the program by ticking that option. Software firewall works in computer like this and keeps our personal data from hackers and virus.
In newer generations of Windows Operating Systems like Windows 7, 8, 10, Vista, XP etc., the firewall is already inbuilt and is by default "on" so that the computer is completely protected. If you want, you can also change it according to your need by looking at its settings in computers. Apart from this, many antivirus are also present in the internet such as Avast, McAfee, Norton, QuickHeal Istadi, all these also have the same firewall work.Whenever we install new software or games in our computers, a popup box appears in our computer, in which the firewall asks for permission from the user whether you have to install this program in your computer because Windows firewall blocked this program. Has done, so if we want, we can install the program by ticking that option. Software firewall works in computer like this and keeps our personal data from hackers and virus.
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Computer