I am trying to configure a reverse proxy to access ISPConfig, but it doesn't seem to work. I would like to use Cloudflare's SSL certificates, or alternatively, I will install Let's Encrypt certificates on the proxy server. The sites installed on ISPConfig are working correctly with the reverse proxy. Here is the configuration file: <VirtualHost *:80> ServerName ispconfig.domain.tld ProxyRequests Off ProxyPreserveHost Off ProxyPass / https://192.168.0.7:8080/ ProxyPassReverse / https://192.168.0.7:8080/ SSLProxyEngine on SSLProxyVerify none SSLProxyCheckPeerCN off SSLProxyCheckPeerName off RequestHeader set X-Forwarded-Proto "https" RequestHeader set X-Forwarded-Host "ispconfig.domain.tld" ErrorLog ${APACHE_LOG_DIR}/ispconfig-error.log CustomLog ${APACHE_LOG_DIR}/ispconfig-access.log combined </VirtualHost>