SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are cryptographic protocols designed to provide secure communication over a computer network. They ensure data privacy, integrity, and authentication between clients and servers. Below is a concise overview of key concepts and best practices:

🔑 Key Concepts

  • SSL/TLS Handshake: Establishes a secure connection by negotiating encryption algorithms and exchanging keys.
  • Certificates: Digital documents that verify the identity of a server (e.g., SSL_Certificate).
  • Encryption: Protects data using symmetric/asymmetric algorithms (e.g., AES, RSA).
  • Protocols: TLS 1.2, TLS 1.3, and older versions like SSL 3.0 (deprecated).

🧾 How to Obtain an SSL Certificate

  1. Choose a trusted Certificate Authority (CA) like Let's Encrypt or DigiCert.
  2. Generate a Certificate Signing Request (CSR) on your server.
  3. Validate domain ownership through DNS or file methods.
  4. Install the issued certificate on your server configuration.

⚙️ Configuration Best Practices

  • Use TLS_Protocol with strong cipher suites (e.g., TLSv1.3).
  • Enable HTTP/2 or HTTP/3 for improved performance.
  • Implement HSTS headers to enforce secure connections.
  • Regularly update certificates and revoke compromised ones.

❓ Common Issues

  • Certificate Errors: Check expiration dates or chain validity.
  • Protocol Mismatch: Ensure client and server support compatible versions.
  • Mixed Content: Avoid loading HTTP resources on HTTPS pages.
  • Performance Bottlenecks: Optimize encryption settings for latency.

📚延伸阅读

For deeper insights, explore our security best practices or FAQ section.

SSL_Certificate
TLS_Protocol
encryption
secure_connection