Here are some tips to secure your n8n instance hosted on GKE for handling webhooks.
Setup a reverse proxy for Webhook security Choose the right reverse proxy HTTPS with SSL/TLS:
Enable HTTPS in your reverse proxy configuration.
Obtain SSL/TLS certificates: You can either use self-signed certificates for testing or obtain certificates from trusted CAs for production environments.
Configure SSL/TLS termination on the reverse proxy. This ensures that only encrypted connections reach your n8n instance.
Webhook Management:
Configure n8n webhooks: Define webhooks within n8n specifying their URL endpoints.
Use secure connections: Ensure webhook URLs (exposed by the reverse proxy) use HTTPS and are accessible to the authorized senders.
Implement authentication and authorization: Use appropriate mechanisms like API keys, tokens, or challenge-response to restrict access to your webhooks and prevent unauthorized data manipulation. Consider using n8n’s native features or additional security plugins for authentication and authorization.
Monitor and log webhook activity: Monitor and log webhook requests to track usage, identify potential issues, and maintain an audit trail.