Firefox woes connecting to app server 4

[qtelcom]

Anyone else see this? App server 9.1.3

On Firefox 39.0

An error occurred during a connection to x.x.x.x. SSL received a weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message. (Error code: ssl_error_weak_server_ephemeral_dh_key)

Google searching turns up

https://weakdh.org/

any ideas?

 

[qtelcom]

Found the workaround, I'm sure Avaya will need to address this in a future SP.

Type "about:config" in the FireFox address box.

Click through the "promise to be careful" warning.

In the Search box along the top of the config menu, enter "security.ssl3.dhe_rsa_aes_128_sha" and press Enter.

It should find the entry config. The value will be "true". Double click it to change it to "false" (see attached screen cap).

Repeat the same process with the "security.ssl3.dhe_rsa_aes_256_sha" key.

Source:

https://bugzilla.mozilla.org/show_bug.cgi?id=587407#c100