[2024-feb-29] Sad news: Eric Layton aka Nocturnal Slacker aka vtel57 passed away on Feb 26th, shortly after hospitalization. He was one of our Wiki's most prominent admins. He will be missed.
d/or TLS1.3 support.
Update: (December 2018) NSS Security patch brings Slackware 14.2 up to nss-3.40 which should fix this too.
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2018&m=slackware-security.430378
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That LinuxQuestions post you reference is now more than a year old