Using Firefox browser to login MCU with the error ssl_error_weak_server_ephemeral_dh_key

Publication Date:  2015-12-10 Views:  355 Downloads:  0
Issue Description

Using the the Firefox browser (version 42) to access the HTTPS website, error 'ssl_error_weak_server_ephemeral_dh_key will occur', and makes the access fail.

Solution

1/ Open the Firefox browser, and input about:config at the address field,

2/ Search ssl3.dhe at the search field, then change the value of the 2 parameters below from true to false

security.ssl3.dhe_rsa_aes_128_sha=false


security.ssl3.dhe_rsa_aes_256_sha=false

3/ If still fail,search ssl3.ecdhe at the search field,  change the value of the 2 parameters below from true to false

security.ssl3.ecdhe_ecdsa_aes_128_sha=false

security.ssl3.ecdhe_ecdsa_aes_256_sha=false

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