What is Domain Pollution and What is Domain Pollution? What are the consequences of how to break

Domain name pollution, also known as DNS pollution, is the same as real environmental pollution, and there is also pollution in the network, which is the domain name pollution that makes the majority of netizens headaches, it is a method that allows ordinary users to not communicate with them due to obtaining a fake target host IP, and it is a DNS cache poisoning attack (DNS cache poisoning). The way it works is that because the usual DNS query does not have any authentication mechanism, and the DNS query is usually based on UDP is a connectionless and unreliable protocol, the DNS query is very easy to be tampered with, through the intrusion detection of the DNS query on UDP port 53, once the request that matches the keyword is found, it will immediately disguise itself as the name server (NS) of the target domain name to return false results to the queryer.

Domain name fouling, on the other hand, occurs in the first step of a user's request, directly interfering with the user's DNS request from the protocol.

Diagnosis and solution of not being able to access the Internet.

To solve domain name pollution, we can only use various encryption** for remote domain name resolution, VPN, or exploit system vulnerabilities.

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"Domain name pollution" is also known as "DNS pollution", "domain name spoofing", and "domain name cache poisoning". "Domain name pollution" simply means that there is a time lag between when a computer sends a request for a "domain name lookup" to a name server, and then the name server sends a response to your computer.

If an attacker is able to forge a false DNS reply from a name server before it reaches your computer, send it to your computer. Then your computer is receiving the wrong message and getting an incorrect IP address.

Domain name poisoning refers to some deliberately or unintentionally created domain name server data packets that point the domain name to an incorrect IP address.

Generally speaking, there are reliable domain servers on the Internet, but in order to reduce the traffic pressure on the network, the general domain name servers will temporarily store the resolution records obtained from the upstream name servers.

The next time another machine asks for a domain name resolution, the service can be provided immediately. Once the cache of the domain's local nameservers is contaminated, computers in the domain are directed to the wrong server or server's.

Can contamination be treated? (20079761) Domain name contamination will cause the domain name to be unable to be opened.

Domain name poisoning is when a DNS server returns an incorrect IP address for a domain name query request.