Shulou(Shulou.com)06/01 Report--

This article introduces the relevant knowledge of "what is DNS pollution". In the operation of actual cases, many people will encounter such a dilemma. Then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

What is DNS pollution?

According to Baidu Encyclopedia, some network operators have done certain operations on DNS for certain purposes, resulting in the normal Internet settings using ISP unable to obtain the correct IP address through the domain name. Some countries or regions can also use this method to prevent a website from being visited for certain purposes, and they also have part of the international DNS root servers or images.

(stealing a picture of a possible bar) unlike some rogue operators who use DNS to hijack domain names and send small advertisements, DNS pollution makes domain names inaccessible directly, so it is necessary to modify DNS servers.

How to verify whether it is contaminated by DNS?

1. Click "start"-"run"-enter CMD, then type ipconfig / all, and find the address of the DNS server you are using in "DNS SERVER".

two。 Then type nslookup wangyueblog.com (your domain name) your DNS server IP to see if it can be resolved.

3. Then enter nslookupwangyueblog.com 8.8.8.8 to use Google's DNS server authentication.

How to solve the problem that the domain name is contaminated by DNS?

1. Replace the DNS resolution server. Generally speaking, domain name registrants provide free DNS resolution services. Take my practical Godaddy as an example, it provides a lot of free DNS resolution services, and the resolution speed is very fast, which is much faster than what was practical before, and it is impossible to all be contaminated, so you can replace two DNS servers.

two。 Use a third-party DNS resolution service. At present, there are many third-party websites that provide DNS resolution services, many of which are free. In China, there are also free DNS resolution services. Using third-party DNS services can partially solve the problem, such as the DNSpod service being used by Yuanyue, 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 like DNSPOD to resolve the domain name, and then go to a domain name registrar like godaddy to modify the DNS server in a few hours, so as to avoid the blank period caused by resolution time on the blog.

Note 2: the domain name of Godaddy is currently contaminated by DNS. It cannot be accessed even if it is connected to VPN. It can only be accessed by changing the DNS of your computer (for example, changing it to 8.8.8.8 of google).

3. Build your own DNS server. This is the safest, of course, the most time-consuming waste of money, conditional friends can try.

This is the end of "what is DNS pollution"? thank you for your reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.