A DNS server is a server that contains a database of public IP addresses and associated host names and, in most cases, serves to resolve or translate such common names into addresses IP as required. DNS servers run special software and communicate with each other using special protocols. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay The easiest way to understand the terms: A DNS server on the Internet is the device that translates www.amazon.com that you type in your browser at the IP address 151.101.129.121 which is really. Therefore, we have DNS servers because not only do we want to use human-readable names to access websites, but computers need to use IP addresses to access websites. The DNS server is the translator between the hostname and the IPDNS address Cache PoisoningDNS Cache Poisoning, also known as DNS spoofing, is a type of attack that exploits vulnerabilities in the Domain Name System (DNS) to divert Internet traffic away from legitimate servers and onto fake servers. ones.One of the reasons DNS poisoning is so dangerous is because it can spread from one DNS server to another. In 2010, a DNS poisoning event caused China's GreatFirewall to temporarily escape China's national borders, censoring the Internet in the United States until the problem was resolved. However, if the malware has changed your DNS server settings (which can happen behind the scenes without your knowledge), entering the same URL could take you to an entirely different website or, more importantly, a website that looks like to your bank's website but in reality it isn't. This fake banking site may look identical to the real one, but instead of allowing you to log in to your account, it may simply record your username and password, giving scammers all the information they need to access your bank account. Usually, however, malware that hijacks your DNS servers generally simply redirects popular websites to sites full of advertisements or fake virus websites that make you think you need to purchase a program to clean an infected computer. The Internet doesn't just have a single DNS server, as that would be extremely inefficient. Your Internet service provider operates its own DNS servers, which cache information from other DNS servers. Your home router works like a DNS server, which caches information from your ISP's DNS servers. Your computer has a local DNS cache, so it can quickly reference DNS lookups already performed rather than performing a DNS lookup over and over again. DNS poisoning like this can also spread. For example, if several ISPs obtain their DNS information from the compromised server, the poisoned DNS entry will spread to ISPs and be cached. It will then spread to home routers and DNS caches on computers as they look up the DNS entry, get the wrong response, and store it. CDNetworks offers a managed, cloud-based, authoritative and global DNS service, which ensures that websites can be reached, efficiently and quickly. User portal with advanced management and control features. Ensures DNS security, protecting against spoofing and cache poisoning. Always available thanks to built-in redundancy. Fast responses around the world. Intuitive and easy-to-use configuration and management. Prevents cache poisoning attacks: Install an antivirus program so that malicious programs are detected before they can cause damage. Pay attention to the appearance of a website. If it is slightly.