SSLv3 with Diffe-Hillman Ephmeral Encryption Overide in Firefox

Bypassing unsafe SSL encryption with DHE, which is blocked by the new version of Firefox 39+

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


The work-around for Firefox is to allow SSLv3 with DHE using the following steps:


1) In FireFox, enter "about:config" in the URL field and press enter.

2) Accept the "This might void your warranty!" warning :)

3) In the search field at the top, enter "security.ssl3.dhe_rsa_aes"

4) Double click each result (128 and 256) to toggle the Value to "false"

Now retry your site - it should work now. Remember to change these settings back when you're done.