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ssllabs rating B to A or A+



Hi, In addition to another question I posted about security headers (https://kb.paessler.com/en/topic/83259-implement-security-headers) I would like to know if you have any advise to get an A+ on ssllabs.com At this point I'm having the following issues: - This server supports weak Diffie-Hellman (DH) key exchange parameters. Grade capped to B. - This server does not support Forward Secrecy with the reference browsers. Grade capped to B.

For more information: https://www.ssllabs.com/ssltest/analyze.html?

Thank you. Dennis

diffie-hellman forward-secrecy security ssllabs

Created on Jan 16, 2019 8:05:37 AM

Last change on Jan 17, 2019 9:19:52 AM by  Torsten Lindner [Paessler Support]

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Accepted Answer



Hello Dennis,

Thank you for the KB-Post. Just to check, is your PRTG Server set to "High security (TLS 1.1, TLS 1.2)" in its Webserver-System Settings? You can create a longer DH key in order to get a higher security rating. Please refer to the following knowledge-base article for detailed information: How can I generate a DH key that is longer than the existing default key in PRTG?

best regards.

Created on Jan 16, 2019 1:17:45 PM by  Torsten Lindner [Paessler Support]

Last change on Jan 16, 2019 1:18:28 PM by  Torsten Lindner [Paessler Support]



Hi Torsten, Thank you for this. I managed to bring the rating up to an A! Regards, Dennis

Created on Jan 17, 2019 9:11:34 AM



Alright thanks for the update! (I removed your URL from the initial post.)

Created on Jan 17, 2019 9:19:34 AM by  Torsten Lindner [Paessler Support]

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