Ce site disposera de fonctionnalités limitées pendant que nous effectuons des opérations de maintenance en vue de vous proposer un meilleur service. Si un article ne règle pas votre problème et que vous souhaitez poser une question, notre communauté d’assistance est prête à vous répondre via @FirefoxSupport sur Twitter, et /r/firefox sur Reddit.

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

En savoir plus

erorr message and unable to connect to frequently used site on firefox but no problem connecting with Safari.

  • 4 réponses
  • 3 ont ce problème
  • 2 vues
  • Dernière réponse par FredMcD

more options

Unable to access web site flyingtogether.ual.com on Firefox for last couple of days. Following error message pops us when trying: error occurred during connection to united.com. SSL received weak ephemeral Diffie-Hellmanm Key in server key exchange handshake message (error code: SSL_error_weak_server_ephemeral-DH-key).

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.

No problem accessing same site on Safari.

Unable to access web site flyingtogether.ual.com on Firefox for last couple of days. Following error message pops us when trying: error occurred during connection to united.com. SSL received weak ephemeral Diffie-Hellmanm Key in server key exchange handshake message (error code: SSL_error_weak_server_ephemeral-DH-key). The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. No problem accessing same site on Safari.

Toutes les réponses (4)

more options

hi danfrank, this means that the webserver you're trying to reach is vulnerable to the recently published logjam attack and therefore firefox won't connect: http://arstechnica.com/security/2015/05/https-crippling-attack-threatens-tens-of-thousands-of-web-and-mail-servers/

please report that to webmaster of the site in question to fix that issue...

https://weakdh.org/

more options

What if you set both of these to false in about:config:

security.ssl3.dhe_rsa_aes_128_sha security.ssl3.dhe_rsa_aes_256_sha

Are you able to connect with those ciphers disabled?

Edit: More complete steps if my reference to about:config was gibberish to you:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful.

(2) In the search box above the list, type or paste dhe and pause while the list is filtered

(3) Double-click the security.ssl3.dhe_rsa_aes_128_sha preference to switch it from true to false

(4) Double-click the security.ssl3.dhe_rsa_aes_256_sha preference to switch it from true to false

Modifié le par jscher2000 - Support Volunteer

more options

This solved my problem. Thank you so much. Dan

more options

Hello,

I am glad to hear that your problem has been resolved. If you haven't already, please select the answer that solves the problem. This will help other users with similar problems find the solution more easily.

Thank you for contacting Mozilla Support.