What does DNS Poisoning mean?

DNS means Domain Name System. It's the global system which converts domain names (eg domain.com) into IP addresses (eg DNS Poisoning refers to the intentional manipulation of this system such that a domain name does not resolve to a correct IP address. When in place, the website will be unavailable or redirect to a different website.

There are legitimate reasons why a DNS lookup may return different IPs depending on the country where the request comes from. For this reason, one can only conclude that a website is not subject to DNS poisoning, if

  1. When accessed from the US, the host name resolves to an IP address, and
  2. When accessed from China, the host name resolves to the same IP address.

Next, the system tries to identify bogus DNS packets sent by the Great Firewall (GFW). GFW will return an IP address from a blocked IP pool if the user's DNS inquiry matches the blacklist. GFW would even return a bogus DNS response if the user is performing the look up from a nonexistent DNS server. In an untempered network, the DNS inquiry should return no results because the DNS server is invalid.


Nice And Good...





I appreciate everything you have added to my knowledge base.Admiring the time and effort you put into your blog and detailed information you offer.Thanks.


I must say that overall I am really impressed with this blog.It is easy to see that you are impassioned about your writing.Nice post.i was searching for this post from last 30 minutes on google. and i reach to your website,superbly written and well explained.thanks for your article.looking for other posts also.keep it up.

Thanks for sharing, really helpful.

Soccer Livestream: We all have spent our youth times by actively playing with sports in school and playgrounds with your friends. Now we don't have much time to play so watch all the games through online. Therefore, here is the sports app https://liveiptvapks.com/sportsarefree-xyz/.


Add new comment