(difficulty: difficult, requires system administrator access to the server hosting the Moodle instance to install a SSL tunneling like e.g. stunnel ) Configure the SSL tunnelling and start it. See below 1 an example using stunnel under CentOS; Configure the secure access in the Moodle chat daemon settings, using the default values; Enable the secure access to the chatd daemon; Start the chatd daemon; Configure a chat activity and attend to it: look at the frameset source to see that the https:// URL is in place; Using two different browsers (e.g. CR and FF) with two different Moodle users, play a bit with the chat to see that it is happily doing its job. 1 stunnel installation, configuration settings and start CLI commands: # yum install stunnel -y # cat /etc/stunnel/stunnel.conf # Use the same Apache SSL configuration: /etc/httpd/conf.d/ssl.conf cert = /etc/pki/tls/certs/localhost.crt key = /etc/pki/tls/private/localhost.key chroot = /var/run/stunnel/ setuid = nobody setgid = nobody pid = /var/run/stunnel.pid client = no   [moodle-chatd] accept = <chat_serverhost>:9111 connect = 127.0.0.1:9111   # mkdir -p /var/run/stunnel/var/run # chown -R nobody.nobody /var/run/stunnel/ # /usr/sbin/stunnel /etc/stunnel/stunnel.conf # netstat -nat | grep 9111 tcp 0 0 <IPv4 address of chat_serverhost>:9111 0.0.0.0:* LISTEN