Tuesday, September 11, 2018

DNS flagday edns

EDNS  is one of these tricky items that can  bring a lot of dns  answers . Per   DNS standards RFCs


DNS-server should not  flake out if a EDNS version options are sent and yet EDNS is not supported but in a lot of cases this  is not the case.

dnsflagday has a  test and compliance that you can run against any domain and get the  compliance results. They also have great collections and statistics.


running the test is simple, just add you domain



A pass or fail ( see fail below )




Details of the test results  are provided on  failures




So what do you do if you have a failure? Easy, you  upgrade your dns-server !


Alternative; you can  use the edns compliance checker at this URL link

https://ednscomp.isc.org/ednscomp/a768f12b06





NSE ( network security expert) and Route/Switching Engineer
kfelix  -----a----t---- socpuppets ---dot---com
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