rusackas commented on code in PR #35190:
URL: https://github.com/apache/superset/pull/35190#discussion_r2373068418
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docs/docs/security/securing_superset.mdx:
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@@ -0,0 +1,203 @@
+---
+title: Securing Your Superset Installation for Production
+sidebar_position: 3
+---
+
+> *This guide applies to Apache Superset version 4.0 and later.*
+
+The default Apache Superset configuration is optimized for ease of use and
development, not for security. For any production deployment, it is
**critical** that you review and apply the following security configurations to
harden your instance, protect user data, and prevent unauthorized access.
+
+This guide provides a comprehensive checklist of essential security
configurations and best practices.
+
+### **Critical Prerequisites: HTTPS/TLS Configuration**
+
+Running Superset without HTTPS (TLS) is not secure. Without it, all network
traffic—including user credentials, session tokens, and sensitive data—is sent
in cleartext and can be easily intercepted.
+
+* **Use a Reverse Proxy:** Your Superset instance should always be deployed
behind a reverse proxy (e.g., Nginx, Traefik) or a load balancer (e.g., AWS
ALB, Google Cloud Load Balancer) that is configured to handle HTTPS termination.
+* **Enforce Modern TLS:** Configure your proxy to enforce TLS 1.2 or higher
with strong, industry-standard cipher suites.
+* **Implement HSTS:** Use the HTTP Strict Transport Security (HSTS) header to
ensure browsers only connect to your Superset instance over HTTPS. This can be
configured in your reverse proxy or within Superset's Talisman settings.
+
+### **`SUPERSET_SECRET_KEY` Management (CRITICAL)**
+
+This is the most critical security setting for your Superset instance. It is
used to sign all session cookies and encrypt sensitive information in the
metadata database, such as database connection credentials.
+
+* **Generate a Unique, Strong Key:** A unique key must be generated for every
Superset instance. Use a cryptographically secure method to create it.
+ ```bash
+ # Example using openssl to generate a strong key
+ openssl rand -base64 42
+ ```
+* **Store the Key Securely:** The key must be kept confidential. The
recommended approach is to store it as an environment variable or in a secrets
management system (e.g., AWS Secrets Manager, HashiCorp Vault). **Do not
hardcode the key in `superset_config.py` or commit it to version control.**
+ ```python
+ # In superset_config.py
+ import os
+ SECRET_KEY = os.environ.get('SUPERSET_SECRET_KEY')
+ ```
Review Comment:
Agreed on this - this page can link to the other docs, where we mention all
the instructions and setting (including key size). DRY principle FTW :)
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