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DNS hijacking, DNS poisoning, 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/IP configuration 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.
Internet anomalies in mainland China in 2014. In the afternoon of January 21, 2014, the Chinese internet suffered a major failure. The country's DNS infrastructure, which is responsible for translating domain names into IP addresses, started directing unrelated domains from various TLDs to the completely unresponsive IP address 65.49.2.178 at ...
Tests for both symptoms of DNS poisoning and HTTP blocking from a number of locations within mainland China. China Firewall Test - Test if any domain is DNS poisoned in China in real-time. DNS poisoning is one way in which websites can be blocked. Others are IP blocking and keyword filtering.
DNS spoofing, also referred to as DNS cache poisoning, is a form of computer security hacking in which corrupt Domain Name System data is introduced into the DNS resolver 's cache, causing the name server to return an incorrect result record, e.g. an IP address. This results in traffic being diverted to any computer that the attacker chooses.
China has been on the Internet intermittently since May 1989 and on a permanent basis since 20 April 1994, [1] although with heavily censored access. In 2008, China became the country with the largest population on the Internet and, as of 2024, has remained so. [2] : 18 As of July 2023, 1.05 billion (73.7% of the country's total population) use ...
One useful offshoot of this concept is called BGP anycasting and is frequently used by root DNS servers to allow multiple servers to use the same IP address, providing redundancy and a layer of protection against DoS attacks without publishing hundreds of server IP addresses. The difference in this situation is that each point advertising a ...
DNS blocking. Domain Name System blocking, or DNS blocking / filtering, is a strategy for making it difficult for users to locate specific domains or websites on the Internet. It was first introduced in 1997 as a means to block spam email from known malicious IP addresses. [1]
The server was shut down to stop the poisoning. In 2014, two-thirds of China's DNS infrastructure began resolving unrelated domains to 65.49.2.178, an address owned by the US-based Dynamic Internet Technology, Inc., resulting in widespread internet outage in China.