DNS kya hai aur ads-trackers DNS se kaise block hote hain
Falorax · 22 October 2026 · 7 min
Seedha jawabDNS internet ki phone book hai: app server ka naam bolta hai, DNS uska address batata hai. DNS blocker usi sawaal par 'ye naam exist nahi karta' bol deta hai, to app connect nahi kar paata. Ads aur trackers ke liye ye achha tareeka hai, par seedha IP, apps ke andar ka encrypted DNS aur ek hi domain se aane wale ads ye nahi rok sakta.
DNS: internet ki phone book
Aap ya aapka app kisi website ya server se baat karna chahta hai, to usse uska naam pata hota hai (jaise example.com), par network ko address chahiye (ek number). DNS wahi kaam karta hai: naam do, address lo. Ye har connection se pehle hota hai, isliye har app ka pehla kadam DNS sawaal hota hai.
- App poochhta hai: 'ads.adnetwork.example ka address kya hai?'
- DNS server address batata hai (ya kehta hai ki aisa naam exist nahi karta).
- Address mil gaya to app us server se connect karta hai.
DNS blocking kaise kaam karti hai
DNS blocker beech mein baith jaata hai. Jab sawaal ek aise naam ka ho jo blocklist mein hai, wo asli jawab ke bajaye 'ye naam exist nahi karta' (NXDOMAIN) bol deta hai. App ke paas address hi nahi hota, to wo connect nahi kar paata. Baaki sab naam waise hi aage jaate hain.
Blocklist ek lambi file hoti hai jisme ads, trackers aur bure domains ke naam hote hain. Falorax Shield StevenBlack/hosts list use karta hai (MIT licence; ye khud kai upstream lists ko jodti hai, jinki apni sharten hain).
Fayde
- Saare apps par ek saath, sirf browser par nahi.
- Root nahi chahiye. Android ke VPN interface se sirf DNS sawaal liye jaate hain.
- Halka: content nahi, sirf naam ka sawaal dekha jaata hai.
- Dikhta hai: log mein dikhta hai kaun-sa naam block hua.
Hadein: DNS blocking kya nahi kar sakti
| Cheez | Kyun nahi rukti |
|---|---|
| Seedha IP se connect hone wale apps | Unhe naam chahiye hi nahi, isliye DNS sawaal aata hi nahi. |
| App ke andar ka encrypted DNS (DoH/DoT) | Sawaal system DNS se hokar jaata hi nahi. |
| Private DNS (strict) setting | Android sawaal seedha chune hue server ko bhejta hai. |
| Ek hi domain se aane wale ads | Agar ad aur content ek hi naam se aate hain to naam rokna dono rok dega. |
| HTTPS ke andar ka content | DNS sirf naam dekhta hai, page nahi. |
Kabhi-kabhi koi site ya app over-blocking se kaam karna band kar sakta hai. Isliye achha DNS blocker aapko log dikhata hai aur whitelist deta hai.
DNS blocker, browser ad-blocker aur antivirus mein farak
| Kaam | Kahan chalta hai | |
|---|---|---|
| DNS blocker | Domain ke naam par rok | Poore phone ke saare apps |
| Browser ad-blocker | Page ke andar se ads hatana | Sirf us browser mein |
| Antivirus | Apps/files mein malware dhoondhna | Phone ke apps aur files |
Aksar puchhe jaane wale sawaal
DNS blocking aur VPN mein kya farak hai?
Normal VPN poora traffic kisi aur server se bhejta hai. Shield jaisa DNS blocker Android ke VPN interface ko sirf DNS sawaal paane ke liye use karta hai: ek chhota address tunnel mein hota hai, baaki traffic apne normal rasta leta hai.
Kya DNS blocker se sab ads band ho jaate hain?
Nahi. Jo ads alag ad-network ke domain se aate hain wo ruk sakte hain. Jo ads app ya site ke apne domain se aate hain, unhe naam se rokna possible nahi.
Kya DNS blocker mere passwords ya messages dekhta hai?
Nahi. Wo sirf domain ka naam dekhta hai. HTTPS ke andar ka content, passwords ya messages DNS sawaal mein hote hi nahi.
Agar koi app toot jaye to kya karein?
Log mein dekho kaun-sa domain block hua aur use whitelist kar do. Phir bhi na chale to us app ke liye Shield band karke dekho.
Sources
Aur padho
- Android camera ke liye poochhta hai, internet ke liye nahi: kyun?Camera aur location Deny kar sakte ho, par internet nahi. Normal permission kya hai, iska matlab kya hai aur kaun-sa app kise bula raha hai, ye kaise dekhein.
- Android Private DNS kya hai aur Shield ke saath kaun-sa mode rakheinPrivate DNS ke teen mode (Off, Automatic, hostname) aur Falorax Shield par unka asar. Kaun-sa mode rakhein, setting kahan milti hai aur kaise check karein.
- Shield ko VPN permission kyun chahiye aur wo kya dekhta haiShield Android ka VPN interface sirf DNS sawaal paane ke liye use karta hai. Kya padhta hai, kya nahi dekhta, data kahan jaata hai aur khud kaise verify karein.
Dekho, aapka phone kisse baat karta hai.
Falorax Shield · Android · Direct APK