What Is Firewall In Networking And Its Types?

So,Aaj Hum Ek New Topic k Upar baat krenge Firewall....Firewall  kya hota hai? aur iska importance kya hai networking me aur Ye Kitne Types k Hote hai?

So Lets Start...

Firewall Ek tarah ka Protection hai Jb v ap internet pe kuch surf krte hai ya kuch download krte hai tb aise me jo v traffic apke taraf aa rha hota hai usko wo prevent krta hai ki koi Unknown software ko wo install na kr de bina apke permission k so isiliye computer me Firewall ek deewar ki tarah hai jo apko in sb cheezo se protect krta hai taki sirf wohi chiz apko mile jiske liye apne permission dia ho aur koi unknown chiz na aa paye apke computer me like Malware ya virus...Aur agar kahi se Virus ya malware apke computer me aa gya aur apka computer network se 4 ya 5 aur computer connected h tb ye virus apke computer se kisi aur dusre computer me distribute na ho faile ni..


There Are Two Types of Firewall:-

1.Hardware Based
2.Software Based




1:-Hardware Based-: Hardware Firewall Aaj kal Sbhi Routers me Phle se hi maujood rehta hai jiska kaam ek computers se dusre computer me virus jane se rokna maan lijiye apke network k sath sath 10 aur computer connected hai tb aise me Firewall ka yehi kaam hota hai ki agar galti se koi virus apke computer me gya to wo 1 computer se dusre computer me malware ya virus ko jane se rok sake ....

Jb v hum log online kuch Surf ya kuch download krte hai wo data packet k form me niklta hai aur uske sath sath hamare network ka id v add rehta hai jb v server se request aata hai tb wohi id add hokar wapas aata hai jisse Firewall ko pata chal jata hai ki sahi data sahi insan ko jaa rha hai aur aise me agar koi aur Third person ka network ka id sath me aa rha hai to firewall usko blocked kr deta hai ya to wo koi  hacker ho sakta hai ya virus aa rha hota hai ...

2:-Software Based-:Software Firewall iis new generation k Operatimg System me jaise Win7,8,10 in sb me pahle se Firewall Inbuilt rehta hai by default on rehta hai ...taki hamara jo computer hai wo puri tarah se secure rhe ..aur iske alawa v market me bahut sare Antivirus hai jaise Quick heal,Macfee,Avast jaise Software hai jo in sbhi ka kaam Firewall kaa kaam ek hi hai,ye Virus aur malware se v protect krte hai...



Jb v Hum computers me koi software ya games install krte hai upar me jo pic hai uski tarah pop up dikhai deta hai ye hame ek tarah warning deta hai ya hum keh sakte hai ki Install hone k liye permission mang rha hai ki ap is software ko install krna chahte hai qki Is software ko firewall ne blocked kr dia hai hum chahe to tick mar k install v kr sakte hai Sofwate Firewall isi tarah se kaam krta hai aur ye hamare personal data ko hackers se bachata hai ..
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