Using Apache as a Reverse Proxy

A reverse proxy allows you to run a Solid server on a local port and let the proxy handle traffic to public HTTP and HTTPS ports.

Configuration

enable modules (ssl.conf, ssl.load, proxy.conf, proxy.load, proxy_html.conf, proxy_html.load, proxy_http.conf, proxy_http.load, rewrite.load, socache_shmcb.load) by creating symlinks in /etc/apache2/mods-enabled/ pointing to /etc/apache2/mods-available/*
```
cd /etc/apache2/mods-enabled
for module in ssl.conf ssl.load proxy.conf proxy.load proxy_html.conf proxy_html.load proxy_http.conf proxy_http.load rewrite.load shmcb.load;
do ln -s ../mods-available/$module $module;
done
```
edit the appropriate sections of /etc/apache2/sites-available/000-default.conf as follows, substituting example.org for your actual domain name:

<VirtualHost *:80>
ServerName example.org
Redirect / https://example.org

DocumentRoot /var/www/example.org
</VirtualHost>

<VirtualHost *:80>
ServerAlias *.example.org
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
</VirtualHost>

<VirtualHost *.443>
ServerName example.org
DocumentRoot /var/www/example.org

SSLEngine On
SSLProxyEngine On
SSLProxyVerify None
SSLProxyCheckPeerCN Off
SSLProxyPeerName Off
SSLProxyCheckPeerExpire Off
ProxyPreserveHost On

SSLCertificateFile /etc/letsencrypt/live/example.org/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/example.org/privkey.pem
SSLCertificateChainFile /etc/letsencrypt/live/example.org/fullchain.pem

ProxyPass / https://localhost:8443/
ProxyPassReverse / https://localhost:8443/
</VirtualHost>

<VirtualHost *:443>
ServerAlias *.example.org

SSLEngine On
SSLProxyEngine On
SSLProxyVerify None
SSLProxyCheckPeerCN Off
SSLProxyPeerName Off
SSLProxyCheckPeerExpire Off
ProxyPreserveHost On

SSLCertificateFile /etc/letsencrypt/live/example.org/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/example.org/privkey.pem
SSLCertificateChainFile /etc/letsencrypt/live/example.org/fullchain.pem

ProxyPass / https://localhost:8443/
ProxyPassReverse / https://localhost:8443/
</VirtualHost>

edit the appropriate sections of /etc/apache2/sites-available/default-ssl.conf as follows:

<VirtualHost _default_:443>
ServerName example.org:443
DocumentRoot /var/www/example.org

SSLEngine on

SSLCertificateFile /etc/letsencrypt/live/example.org/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/example.org/privkey.pem
SSLCertificateChainFile /etc/letsencrypt/live/example.org/fullchain.pem
</VirtualHost>

Activating the configuration

systemctl restart apache2