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I am trying to access my router but get the following message,An error occurred during a connection to 192.168.50.1. SSL received a weak ephemeral Diffie-Hellma
I use a vpn to connect to a router and when i type in the router address i get the following message, An error occurred during a connection to 192.168.50.1. SSL received a weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message. Error code: SSL_ERROR_WEAK_SERVER_EPHEMERAL_DH_KEY.
I am able to use IE and it allows me the choice to go to the site.
All Replies (1)
That error indicates that the router is defaulting to an obsolete encryption cipher which is vulnerable to the "Logjam" attack that was in the news last year.
You can disable these old ciphers in Firefox to try to force the device to up its game. Here's how:
(1) In a new tab, type or paste about:config in the address bar and press Enter. 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 (disable Firefox from using this cipher)
(4) Double-click the security.ssl3.dhe_rsa_aes_256_sha preference to switch it from true to false (disable Firefox from using this cipher)
Then try to connect again. Any improvement?
Note: I don't know the significance of having a VPN in the mix, but if the problem is between Firefox and the router, this is the best thing to try.