SPF Toolbox is primarily a lookup/analysis web app. Risks include abuse, information leakage, and web service hardening gaps.
¶ Service Exposure and Rate Limits
- Publish behind reverse proxy with TLS.
- Apply rate limiting to lookup endpoints.
- Restrict admin/debug features to internal users.
- Validate query parameters strictly.
- Limit request size and timeout external lookups.
- Block SSRF-like behavior toward internal addresses.
¶ Logging and Privacy
- Log requests for abuse analysis.
- Avoid storing sensitive query data longer than needed.
- Apply retention policies aligned with privacy requirements.