How to completely solve DNS pollution, how to solve DNS pollution

Check whether there is DNS contamination first

IIS7** monitoring.

Check whether the domain name has been hijacked, whether the domain name has been walled, DNS pollution detection, and other information.

Then start to solve: 1. Use various SSH encryption**, remote DNS resolution in encryption**, or use VPN to surf the Internet.

2. Modify the hosts file, the permission priority of the hosts file in the operating system is higher than that of the DNS server, and the operating system will first detect the hosts file when accessing a certain domain name, and then query the DNS server. DNS contamination and DNS hijacking can be addressed by adding a tainted DNS address in hosts.

3. Through some software programming, you can directly ignore the packets that return the result of false IP addresses, and directly solve the problem of DNS pollution.

One is to manually set up the DNS server, but to write the driver plug-in to lose the fake DNS answer packet, you can use sniffer or wireshark to enter the door.

1. Apply for the overseas special line of the enterprise;

2. Self-built DNS;

3. Immigration.

Change DNS or use **.

A better solution is to switch service providers.

DNS contamination refers to something that is deliberately or unintentionally createdDomain name serversgrouping, pointing the domain name to the incorrectIP address

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.

Introduction

DNS contamination.

It means that when a user accesses an address, the domestic server (non-DNS) monitors the marked address accessed by the user, and the server is disguised as a DNS server.

The act of sending back the wrong address to the user.

In order to reduce traffic on the Internet, most domain names will temporarily store the external name server data until the next time another machine asks to resolve the domain name.

, services can be provided immediately. Once the domain is concerned.

If the cache of the domain name server is contaminated, it will direct computers in the domain to the wrong server or server**.

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Glad to serve you, after querying the solution to DNS contamination is as follows: Change DNS server: If you are experiencing DNS contamination issues, you can try to change your DNS server.

You can use public DNS servers such as Google DNS (and Cloudflare DNS (and these DNS servers megawidth are generally more secure and reliable.) Clear DNS cache: Sometimes your computer may cache wrong DNS records, resulting in DNS contamination issues.

You can try clearing the DNS cache by typing the command "ipconfig flushdns" (Windows) or "sudo killall -hup mdnsresponder" (Mac) into a command prompt (Windows) or a terminal (Mac). Use HTTPS: HTTPS protects your internet connection from tampering or stealing.

If you use HTTPS access**, attackers can't tamper with your DNS records, thus avoiding DNS contamination issues. Use a VPN: Use a VPN (Virtual Private Family Imitation Network) to secure your internet connection, hide your IP address, and protect your large chunks of internet traffic.

If you use a VPN, attackers can't tamper with your DNS records, thus avoiding DNS contamination issues.

How to solve the domain name contamination and DNS contamination cleaning How to solve DNS pollution. I believe that the biggest headache for the operator should be that the domain name is polluted, so is there any salvation after the domain name DNS is polluted? Why are domain names still polluted today?

What should I do if my domain name is polluted? Here's what you need to know about DNS contamination of domain names.

Step slag stalk method.

Domain name scrubbing. This method is the most effective, but it is also the most expensive, it is often tens of thousands of yuan, and it is charged on a monthly basis, and small sites cannot be worth it at all.

DNS switching.

If you can't switch DNS, you can choose to use it for free, and many DNS service providers are free to use.

301 Jump.

Although many areas cannot be challenged, there are some places that can be jumped to ease some traffic.

Revision. You can try it, but most of the ** can't complete the revision.

Submit a link to the new site.

After the 301 redirect, it can be said that it is a new station.,Some webmasters are not willing to change friend chains.,If the relationship is better, the webmaster is just a hands-on thing.。

1. Domain name cleaning.

This method is the most effective, but it is also the most expensive, it is often tens of thousands of yuan, and it is charged on a monthly basis, and small sites cannot be worth it at all.

2. DNS switching.

If you can't switch DNS, you can choose to use it for free, and many DNS service providers are free to use.

3,301 redirects.

Although many areas cannot be challenged, there are some places that can be jumped to ease some traffic.

4. Revision. You can try it, but most of the ** can't complete the revision.

5. New site link submission.

After 301 redirect, it can be said that it is a new station.,Some webmasters are not happy to change friend chains.,If it's a good relationship with the webmaster, it's just a hands-on thing.。

Anyway, the methods that are conducive to SEO optimization are used as much as possible, which can accelerate the inclusion and ranking recovery.

1. Replace the DNS resolution server. Generally speaking, domain name registration merchants provide free DNS resolution services, taking GoDaddy, which I am practical, as an example, it provides many free DNS resolution services, and the resolution speed is very fast, much faster than the previous practical Wanwang flow, it is impossible to be polluted all, so you can replace two DNS servers.

2. Use a third-party DNS resolution service. At present, there are many third-party ** DNS resolution services, many of which are free, and there are also free DNS resolution services in China, and the use of third-party DNS services can partially solve the problem, such as the DNSPOD service that Mochizuki is using, which is a relatively stable DNS resolution service in China.

Note 1: When switching to a third-party resolution service, you should first go to a resolution service provider such as DNSPOD to resolve the domain name, and then go to a domain registrar such as Godaddy to modify the DNS server after a few hours, so as to avoid a blank period caused by the resolution time of the blog.

Note 2: GoDaddy's domain name is currently polluted by DNS, even if it is hung with VPN, it cannot be accessed, and it can only be accessed by changing the DNS of your computer (such as changing to Google's).

3. Build your own DNS server. This is the safest, of course, it is also the most time-consuming and wasteful of money, and friends with conditions can try.

The above is the meaning of DNS pollution and the solution when encountering DNS pollution, at the beginning of the server construction, users need to take precautions, trouble points will not go wrong.

Now 360 or Kingsoft can solve this problem.

In fact, the solution to DNS contamination is very simple.

You can call ** to your operator to complain.

Or you can change the DNS yourself.

Google: Active Standby:

114: Primary: Standby:

First of all, DNS pollution, also known as nameserver cache contamination or nameserver snapshot infringement.

DNS contamination. Refers to a deliberately or unintentionally created grouping of nameservers that point the domain name to an incorrect IP address. If you want to know if your ** is DNS contaminated, use ** monitoring tool to detect it.

Generally speaking, there are generally trustworthy domain name servers on the Internet, but in order to reduce traffic on the network, general domain names will temporarily store the external name server data, and the next time another machine requires the domain name to be resolved, it can provide services immediately. Once the cache of the local domain name server of the relevant domain is contaminated, the computers in the domain will be directed to the wrong server or server**.

Solution 1: You need to be able to replace the DNS server. Usually domain name registrants provide free DNS resolution services, take Gdaddy that everyone uses, for example, it can provide a lot of free DNS resolution services, and its resolution speed is also very fast, much faster than the previous use of Wanwang, etc., after all, it is impossible for all of them to be polluted, so just replace two DNS servers.