TLS  1.3 mitm  testing from cloudflare


The following link supports a TLS 1.3 MiTM test checker   https://tls13.mitm.watch/

The results and test identifier is listed in the output;

    test1

Here's the same test when I have re-enabled my TLS decryption device on my network that does not support TLS v1.3

    test2

So keep in mind for the 2nd test , I have the same ;  host ( browser )  , the same network, but the TLS inspection device does not support  TLS v1.3.


NOTE: if you suspect a MiTM device is  inspecting your TLS traffic confirm the cert issuer for the web-server . Reference how to use "crt.sh" to find all listed issues for  website certificates that are using known public  CAs. If your issues string does NOT match the  listed string in "crt.sh" , than a MiTM device is installed and probably  decrypting. This is why SSL/TLS  does not really mean your  100% protected, since the average end-users see a padlock and think they are secured. A MiTM device could be plant in between you and the web-site and unless you know what to look at and look for, you would have no clue.


http://socpuppet.blogspot.com/2017/10/howto-find-certificate-issued-against.html

NSE ( network security expert) and Route/Switching Engineer

kfelix  -----a----t---- socpuppets ---dot---com

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