🛡️ Protection Against Spam & DoS Attacks

Efficiently securing your InstantNodes RPC node from spam and Denial-of-Service (DoS) attacks ensures stability and optimal performance. Here’s how to safeguard your node:

Rate Limiting

🔹 Implement IP-based rate limits to restrict excessive requests.
🔹 Use API key-based quotas to allocate fair usage per user.

Access Control

🔹 Whitelist trusted IPs for internal or high-priority requests.
🔹 Require authentication via API keys or OAuth.

Request Filtering

🔹 Block suspicious patterns, such as repeated invalid method calls.
🔹 Limit resource-intensive queries like getLogs or getProgramAccounts.

Auto-Ban Mechanisms

🔹 Deploy fail2ban or a firewall to block aggressive IPs.
🔹 Detect anomalies with real-time traffic monitoring tools.

Load Balancing & Caching

🔹 Distribute requests using a reverse proxy (e.g., Nginx, Cloudflare).
🔹 Cache frequent responses to reduce redundant load.

By enforcing these measures, your InstantNodes RPC node remains resilient, fast, and secure against malicious activity. 🚀