From Boldcore's wiki
Working VirtualHost config for reverse proxy
...working on my servers.
Include all vhost addresses in /etc/hosts
VHosts on reverse proxy server
Virtual hosts where the webs are actually located must be IP based.
Each on different IP with different domain name (optional)
With IPv6, this is easy ;))
<VirtualHost address.tld:443> ServerName address.tld ServerAlias address.tld ProxyPass / https://web.server.address/ ProxyPassReverse / https://web.server.address/ ProxyRequests Off ProxyPreserveHost On SSLProxyCheckPeerCN off SSLProxyCheckPeerName off SSLProxyCheckPeerExpire off ## For letsencrypt Include /etc/letsencrypt/options-ssl-apache.conf ## For letsencrypt SSLCertificateFile /etc/letsencrypt/live/address.tld/cert.pem SSLCertificateKeyFile /etc/letsencrypt/live/address.tld/privkey.pem SSLCertificateChainFile /etc/letsencrypt/live/address.tld/chain.pem SSLProxyEngine On </VirtualHost>