Windows 10 bereikte EO (einde ondersteuning) op 14 oktober 2025. Als je Windows 10 gebruikt, lees dan dit artikel.

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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How can I completely disable ssl3.0? about:config does not have security.enable_ssl3

Firefox Privacy en beveiliging
CPATRON144 beantwoord
CPATRON144
CPATRON144

Latest discovery by Google says even though I use TLS, I may be configured to be backward compatible to SSL3.0 and a "Poodle" attack by a predator website might induce me to use SSL3.0 and be vulnerable to attack. They say the cure is: "To prevent POODLE attacks on Firefox, open about.config, search for "security.enable," and set "security.enable_ssl3" to false."

First mistake is "about.config" should be "about:config". Second problem is there is no "security.enable_ssl3" line to be found. I don't know if I'm supposed to create the line, and if so, how do I do that?

Latest discovery by Google says even though I use TLS, I may be configured to be backward compatible to SSL3.0 and a "Poodle" attack by a predator website might induce me to use SSL3.0 and be vulnerable to attack. They say the cure is: "To prevent POODLE attacks on Firefox, open about.config, search for "security.enable," and set "security.enable_ssl3" to false." First mistake is "about.config" should be "about:config". Second problem is there is no "security.enable_ssl3" line to be found. I don't know if I'm supposed to create the line, and if so, how do I do that?

Alle antwoorden (3)

the-edmeister
the-edmeister

A new extension has been released to "fix" Firefox 26 and later versions, until Firefox 34 is released on Nov 25th with the fix built-in. https://addons.mozilla.org/en-US/firefox/addon/ssl-version-control/

philipp
philipp
  • Moderator

Gekozen oplossing

hello CPATRON144, you can turn off SSL3 in firefox like this: enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named security.tls.version.min. double-click it and change its value to 1.

https://blog.mozilla.org/security/2014/10/14/the-poodle-attack-and-the-end-of-ssl-3-0/

CPATRON144
CPATRON144 Vraageigenaar

Thanks. I appreciate the reply.