Latest versions of major browsers start to warn the user if TLS version is under some threshold.
ZS 3.9.3 has OpenSSL v 1.0.2o (27 Mar 2018) which supports also TLSv1.2 (‘openssl ciphers -V’ for the whole list).
I copied /etc/httpd/ssl.conf in /Database/etc/httpd/ssl.conf and edited it with:
SSLProtocol -ALL +SSLv3 +TLSv1 +TLSv1.1 +TLSv1.2
(I should remove +SSLv3 ..anyway)
Then I created a ‘post boot’ job with:
/bin/cp /Database/etc/httpd/ssl.conf /etc/httpd/ssl.conf
After a reboot the secure session was established as: