Guys if i tell You what is firewall and how does it works then you can definetly guess is firewall ok for you or not and why you need it..if i talk outside of computer world firewall is a type of wall which is fire resistent by which if fire occurs outside of room it will not let it to enter the room and if fire is inside the room it will not let it to get out of the room...now if i talk in world of computer firewall is a type of protection software which do not allow unwanted junks like malware to enter to your computer while surfing on internet or Downloading or anything as the traffic comes to your computer it prevent them to not install any unwanted junk to your computer it makes a wall on all sides of your computer and tries to give access to only that file wich are varified by You which agree to permissions and if your computer have any malware or virus and you are connected to a network with 10 more peoples it will help to not get spread to there's computer too.....
guys firewalls are of two types...
(1)-Hardware based
(2)-software based
So Guys lets first talk about "HARDWARE BASED FIREWALL"Hardware based Firewall are generally found in routers or u can buy them from market and they gives u a hardware protection for example if i connected 10 devices from my router and my router is firewall enabled then all 10 devices will automatically enable firewall on them..Whenever you go to any website and login there you send a packet with your id attached and then you receive another packet send by that website with an id attached fire wall checks that packets and if there id is correct only then it allows to enter to ur computer and if the is fake or unwanted it does not allow passage to it...
Now guys lets talk about "SOFTWARE BASED FIREWALL" the software based firewall can be found in antiviruses such as nortan , macfee etc or you get firewall enabled with your windows Its work is also same as hardware based but it do one more thing for example sometimes you install any software and it shows a popup in which you see that do u want to allow passage to this software or not sometimes u get irritated by this and what is this every time its comes and i have to allow this whenever i install a new software but guys you dont know if firewall do not do this then you can be attacked easily your bank info or you card info can be stealled sometimes u see some popups while running a software that your device is slow and you click it you think that it cleans your memory but infact it fills your memory you uses internet and internet have millions of malicious sites which seems like a antivirus but they are bad viruses...
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