Project Sonar: An Underrated Source of Internet-wide Data
In Summary : Censys uses regular port scan on port 53 through which it is able to detect DNS servers and resolvers around the globe. Censy...
https://updatesinfosec.blogspot.com/2018/05/project-sonar-underrated-source-of.html
In Summary :
Censys uses regular port scan on port 53 through which it is able to detect DNS servers and resolvers around the globe. Censys also does some sort of “health check”. It tries to resolve A record for specific domain name (c.afekv.com) in order to see whether DNS resolver returns correct value.[...]
kindly refer the following link as follow up :
https://ift.tt/2JHm7Gz
Submitted April 30, 2018 at 09:32PM by patrikhudak
via reddit https://ift.tt/2w2lDci
Censys uses regular port scan on port 53 through which it is able to detect DNS servers and resolvers around the globe. Censys also does some sort of “health check”. It tries to resolve A record for specific domain name (c.afekv.com) in order to see whether DNS resolver returns correct value.[...]
kindly refer the following link as follow up :
https://ift.tt/2JHm7Gz
Submitted April 30, 2018 at 09:32PM by patrikhudak
via reddit https://ift.tt/2w2lDci
