Wednesday 11 October 2017
Firewall Kya hai- Security And Types of Firewall in Hindi
What is Firewall in hindi? Firewall kya hai? Firewall kya kaam karta hai? Computer mai Firewall security kya hai, Kitne types ki firewall hoti hai. Computer or internet mai firewall ki kitni requirement hai, aapko firewall ki kya jarurat hai? To is post mai hum apko isi ke bare mai details se bata rahe hai ki Firewall kya hai aur internet use karte time aapko firewall use karna kyu jaruri hai? To is sabhi question ke answer ke liye is post ko pura read kare.
Firewall kya hai?
Firewall ek network security systemhai Jo kuch rules ke aadhar parincoming and outgoing network traffic ko control karta hai. Firewall ka naam Aag ko rokne banayi gayi wall se liya gaya hai. Firewall ko basically apke computer or network ko malicious attacks se or hacker se protect karne ke liye develop kiya gaya hai. Firewall ek hardware bhi ho sakta hai or software bhi ho sakta hai. Agar Simple word me kahe to Firewall ek aisy security layer ki wall hai jisase apke computer or network ko protection milta hai.
How Firewall Works?
Jab bhi koi user private network or internet par data access karne ki request karta hai to wo firewall ke through check hoti hai. means ke firewall incoming and outgoing user request ko check karne ka work karta hai. Jab bhi firewall ke paas koi request receive hoti hai to wo apne rules and policy ke through verify hone ke baad valid request ko information ka access provide karta hai and Invalid request ko block kar deta hai.
Example:- Jab aap apne computer me internet se koi bhi file download kar rahe ho ya online surfing kar rahe ho us time par internet se aane wale traffic ko firewall check karta hai. means ke aapne jis file ko download karne ke liye click kiya it hai kewal usi file ko apke computer par download hone ka access deta hai jisase firewall koi bhi unwanted file ko background se apke computer par aane se bachata hai. kyu ki unwanted files apke computer ko damage kar sakti hai. To aise me firewall humare computer par ek security wall ki tarah kaam karta hai.
Is tarah all incoming and outgoing user request ko firewall ke through pass hona padta hai and firewall network packets data ko check karke policy se verify karta hai and authored or valid request ko access provide karta hai. Isase aap yeh bhi keh sekte hai ki Firewall ek aisa software or hardware hai jisaki help se hackers, viruses, malicious attacks or illegal access se apke network system ko secured rakhata hai.
Types of Firewall
Firewall 2 types ke hote hai 1- hardware based and 2- software based.
1. Hardware based Firewall:-
Aajkal apko sabhi routers me firewall dekhne ko milta hain aur iske alawa apko alag se specifically dedicated firewall wale device bhi milte hain. Ye firewall ek hardware protection dete hain. Jisaka kaam hota hai ek computer se dusare computer me virus ko jane se rokna. Example ke liye Agar apke paas 5 computer hai jo ek hi router or modem se connected hai aur us router mai firewall hai to wo router All computer ke liye Firewall ka kaam karega. To aise me jab bhi computer se internet par kuch bhi work hota hai to waha par firewall malicious attacks se apke computer ko security provide karta hai.
Computer se send ki gayi every request ek data packet ke form mai hota hai jisake sath usake network ka ID bhi hota hai, To jab bhi server se us request ka reply receive hota hai to wahi network id us data packet ke sath receive hota hai Jisase firewall ko ye pata chal jata hai ki ye wahi data hai jisaki request send ki gayi thi. isase agar koi different network id wala data receive hota hai to firewall usako block kar deta hai.
2. Software based Firewall:-
Software based firewall Aak kal har operating system ke sath inbuilt provide kiya jata hai, Apko windows ki sabhi operating system mai bhi firewall protection milta hai jisako aap apne hisab se setting kar sakte hai. Isake alava bahot sare Antivirus software bhi Firewall protection provide karte hai. Jo bahot hi powerful hota hai. Jab bhi hum koi new software install karte hai to humare computer par ek popup show hota hai jisame firewall humase software install karne ki permission mangata hai kyu ki bina permission ke koi bhi software ko install hone ke liye Firewall Allow nahi karta hai Jisase users ki security increase hoti hai. To Ab aap samaj gaye honge ki apke computer ke liye ye firewall kitna jaruri hai.
To Dosto apko What is Firewall? ki puri information mili hogi aur aapko pata chal jayega ki firewall kya hai, aur internet use karte time aapko firewall use karna kyu jaruri hai. Hum apko isi tarah ki aur information provide karte rahenge. Agar apko is post ke related koi bhi question hai to aap niche comment kar sakte hai.
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