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How i can disable TLS in firefox 23 ?


i have fire fox 22 but it update to 23 and i dont know how to disable TLS in firefox 23

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  • Top 10 Contributor
  • Moderator
10743 solutions 96657 answers


You can set the security.tls.version.min and security.tls.version.max prefs to 0 to disable TLS and only leave SSL 3 enabled

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

Modified by cor-el

parsi_93 0 solutions 1 answers

Helpful Reply


 open the firefox ,  type  about:config  in address bar.

click on " i'll be carefull , i promise " type " tls " in search field set following options to false :


and the end set value of " security.tls.version.min " and " security.tls.version.max " to 0

good luck ,

  • Top 10 Contributor
  • Moderator
10743 solutions 96657 answers

Note that the sync prefs specify whether to sync the specified pref is set to true.
So with services.sync.prefs.sync.security.tls.version.max to false the security.tls.version.max is not synced in case you use Firefox Sync.
The security.enable_tls pref is no longer used and can be reset and it will be removed on the next start.

telecomvpn 0 solutions 1 answers

Helpful Reply

  • import "about:config" on the location bar
  • search "tls"
  • security.tls.version.min 1 = enable 0 = disable
  • security.tls.version.max 1 = enable 0 = disable
  • help persian - farsi


Modified by telecomvpn