Technical Requirements

Proxy Server (Public-Facing)

• Simple managed webspace with dedicated IP address
• PHP 7.4+ (PHP 8.0+ recommended)
• PHP cURL extension enabled
• HTTPS/SSL support
• Basic web server (Apache/Nginx)

CiviCRM Server (Private/Protected)

• Existing CiviCRM 5.0+ installation
• Located in VPN or private network
• Firewall allowing connections only from proxy server IP
• API access enabled (depending on your use case)

Network Architecture

• Proxy Server: Internet-accessible, minimal attack surface
• CiviCRM Server: Protected network, accessible only via proxy server IP and internal networks
• Communication: HTTPS between proxy and CiviCRM server