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Simple DNS Hijacking works Tutorial

Simple DNS Hijacking works Tutorial

DNS hijacking or DNS redirection is the practice of subverting the resolution of Domain Name System (DNS) queries. This can be achieved by malware that overrides a computer's TCP/IPconfiguration to point at a rogue DNS server under the control of an attacker, or through modifying the behaviour of a trusted DNS server so that it does not comply with internet standards.
These modifications may be made for malicious purposes such as phishing, or for self-serving purposes by Internet service providers (ISPs) and public/router-based online DNS server providers to direct users' web traffic to the ISP's own web servers where advertisements can be served, statistics collected, or other purposes of the ISP; and by DNS service providers to block access to selected domains as a form of censorship.

KEEPING YOUR INTERNET property safe from hackers is hard enough on its own. But as WikiLeaks was reminded this week, one hacker technique can take over your entire website without even touching it directly. Instead, it takes advantage of the plumbing of the internet to siphon away your website's visitors, and even other data like incoming emails, before they ever reach your network.

On Thursday morning, visitors to WikiLeaks.org saw not the site's usual collection of leaked secrets, but a taunting message from a mischievous group of hackers known as OurMine. WikiLeaks founder Julian Assange explained on Twitter that the website was hacked via its DNS, or Domain Name System, apparently using a perennial technique known as DNS hijacking. As WikiLeaks took care to note, that meant that its servers weren't penetrated in the attack. Instead, OurMine had exploited a more fundamental layer of the internet itself, to reroute WikiLeaks visitors to a destination of the hackers' choosing.

DNS hijacking takes advantage of how the Domain Name System functions as the internet's phone book—or more accurately, a series of phone books that a browser checks, with each book telling a browser which book to look in next, until the final one reveals the location of the server that hosts the website that the user wants to visit. When you type a domain name like "google.com" into your browser, DNS servers hosted by third parties, like the site's domain registrar, translate it into the IP address for a server that hosts that website.

"Basically, DNS is your name to the universe. It’s how people find you," says Raymond Pompon, a security researcher with F5 networks who has written extensively about DNS and how hackers can maliciously exploited it. "If someone goes upstream and inserts false entries that pull people away from you, all the traffic to your website, your email, your services are going to get pointed to a false destination."

A DNS lookup is a convoluted process, and one that's largely out of the destination website's control. To perform that domain-to-IP translation, a your browser asks a DNS server—hosted by the your internet service provider—for the location of the domain, which then asks a DNS server hosted by the site's top-level domain registry (the organizations in charge of swathes of the web like .com or .org) and domain registrar, which in turn asks the DNS server of the website or company itself. A hacker who's able to corrupt a DNS lookup anywhere in that chain can send the visitor off in the wrong direction, making the site appear to be offline, or even redirecting users to a website the attacker controls.

"All of that process of lookups and handing back information are on other people’s servers," says Pompon. "Only at the end do they visit your servers."
just go to the tutorial how dns hijacking work, see

Check This Video Tutorial : Here

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