This server does not support forward secrecy with the reference browsers iis

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A-をAに(Forward Secrecyサポート) テスト結果がA-の場合、「The server does not support Forward Secrecy with the reference browsers. 」というアドバイスが出ているはずです。More Info>>を開いても、Forward Secrecyとは何かという説明が英語で詳細に出ていますが、じゃあどうすれば良いのかはさっぱりわかりませんでし ...

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The systems in scope may or may not be of Active Directory Domain Services, may or may not run Server Core and may or may not allow downloading 3rd party tools. If you still need to support Windows XP with Internet Explorer 8 because of relatively high usage (e.g. Otherwise, change the DWORD value data to 0x0.Protocol Support . 95. Key Exchange . 90. Cipher Strength . 90. Visit our documentation page for more information, configuration guides, and books. Known issues are documented here. ... StartCom Class 1 Primary Intermediate Server CA ...

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The TLS certificate looks good, but the server rates as "B" quality due to a couple of things: 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 will be capped to B from March 2018.This server is vulnerable to the POODLE attack. If possible, disable SSL 3 to mitigate. The server supports only older protocols, but not the current best TLS 1.2. The server does not support Forward Secrecy with the reference browsers. This server supports TLS_FALLBACK_SCSV to prevent protocol downgrade attacks.

I used the standard LetsEncrypt Module in Virtualmin. I ran the SSL Labs checker and I got a B. Reason given is "This server does not support Forward Secrecy with the reference browsers. Grade capped at a B." I have used LetsEncrypt for Apache Webservers before, and I have never had this issue.The server does not support Forward Secrecy with the reference browsers Last edited by Joseph_sys on Sun Jun 22, 2014 3:33 am; edited 1 time in total Back to topIn cryptography, forward secrecy (FS), also known as perfect forward secrecy (PFS), is a feature of specific key agreement protocols that gives assurances that session keys will not be compromised even if long-term secrets used in the session key exchange are compromised. For HTTPS, the long-term secret is typically the private key of the server. Forward secrecy protects past sessions against ...