apt install language-pack-**
SSLProtocol all -SSLv2 -SSLv3 -TLSv1 -TLSv1.1
apache: (SSL v2 is already disabled in Ubuntu 18.04) /etc/apache2/mods-available/ssl.conf
letsencrypt: /etc/letsencrypt/options-ssl-apache.conf
test configs/reload apache/check at ssllabs.com