TLS 1.0 and TLS 1.1 are about to be obsolete. This module warns clients if they are using those versions, to prepare for disabling them.


modules_enabled = {
    -- other modules etc

-- This is the default, you can leave it out if you don't wish to
-- customise or translate the message sent.
-- '%s' will be replaced with the TLS version in use.
legacy_tls_warning = [[
Your connection is encrypted using the %s protocol, which has been demonstrated to be insecure and will be disabled soon.  Please upgrade your client.


A string. The text of the message sent to clients that use outdated TLS versions. Default as in the above example.
Set of TLS versions, defaults to { "SSLv3", "TLSv1", "TLSv1.1" }, i.e. TLS < 1.2.


With the plugin installer in Prosody 0.12 you can use:

sudo prosodyctl install --server= mod_warn_legacy_tls

For earlier versions see the documentation for installing 3rd party modules