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In Firefox 38.5, how do I ensure it will only use tls 1.2 and not fallback to lower versions or ssl?

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  • Èsì tí ó kẹ́hìn lọ́wọ́ mmarino

mmarino
mmarino
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I'm using Firefox 38.5 on CentOS 5.6. My current settings in about:config are as follows: security.tls.version.fallback-limit = 3 security.tls.version.max = 3 security.tls.version.min = 1

Are these settings already correct to only allow tls 1.2 or do I need to change the min value to 3 as well?

I'm using Firefox 38.5 on CentOS 5.6. My current settings in about:config are as follows: security.tls.version.fallback-limit = 3 security.tls.version.max = 3 security.tls.version.min = 1 Are these settings already correct to only allow tls 1.2 or do I need to change the min value to 3 as well?

Ọ̀nà àbáyọ tí a yàn

You would have to set security.tls.version.min = 3 if you really only want to enable TLS 1.2 Note that this will break servers that do not support TLS 1.2

0 means SSL 3.0, 1 means TLS 1.0, 2 means TLS 1.1, 3 means TLS 1.2 etc.

Ka ìdáhùn ni ìṣètò kíkà 👍 4

All Replies (2)

cor-el
cor-el
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  • Top 10 Contributor
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Ọ̀nà àbáyọ Tí a Yàn

You would have to set security.tls.version.min = 3 if you really only want to enable TLS 1.2 Note that this will break servers that do not support TLS 1.2

0 means SSL 3.0, 1 means TLS 1.0, 2 means TLS 1.1, 3 means TLS 1.2 etc.

Ti ṣàtúnṣe nípa cor-el

mmarino
mmarino Ìbéèrè olóhun
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Thanks - excellent answer.