Feature Proposal: Manual VPN Configuration Integration

Objective:
Allow Proton VPN users to configure their VPN connection manually using Android’s built-in VPN client, giving users more flexibility and control while maintaining security.

Why This Feature is Valuable

1. User Flexibility:
   Some users prefer using Android’s native VPN interface for easier switching, battery optimization, or compatibility with other apps.

2. Compatibility:
   Supports devices or scenarios where the Proton VPN app may not work, such as corporate or restricted environments.

3. Enhanced Trust:
   Advanced users can inspect and configure VPN parameters directly, fostering transparency.

Key Features

1. Manual Setup Guide in the App:

• Proton VPN app provides server addresses, ports, and protocol options for manual configuration.
• Step-by-step instructions for IPSec/IKEv2 or OpenVPN (if supported by Android).

1. Configuration Templates:

• Pre-filled templates for common server locations.
• Quick copy/paste of credentials and certificates.

1. Security Maintenance:

   Include certificate pinning and strong encryption recommendations.

   • Automatic alerts if a server configuration is outdated or insecure.

2. Seamless Switching:

Users can choose between the Proton VPN app and the Android VPN interface without losing security or connection settings.

Optional Advanced Features

• Auto-sync server updates: Proton VPN app could push server list updates to the manual configuration template.

• Custom DNS support in Android VPN configuration.

• Diagnostic tool: Check whether the manual configuration is correctly encrypting traffic.