Configure TLS 1.3, a protocol for encrypted connections, on nginx, Apache, and Python applications. Select encryption settings and key exchange groups, disable outdated protocols, and use openssl s_client and testssl.sh to check connections and configuration weaknesses.
Configures TLS 1.3 (RFC 8446) on servers, covering cipher suite and key-exchange group selection, and validates the resulting configuration with openssl s_client and testssl.sh. Use when deploying or hardening TLS 1.3 for secure communications, or when testing a server for common TLS misconfigurations and vulnerabilities.
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TLS 1.3 (RFC 8446) is the latest version of the Transport Layer Security protocol, providing significant improvements over TLS 1.2 in both security and performance. It reduces handshake latency to 1-RTT (and 0-RTT for resumed sessions), removes obsolete cipher suites, and mandates perfect forward secrecy. This skill covers configuring TLS 1.3 on servers, validating configurations, and testing for common misconfigurations.
| Cipher Suite | Key Exchange | Authentication | Encryption | Hash |
|---|---|---|---|---|
| TLS_AES_256_GCM_SHA384 | ECDHE/DHE | Certificate | AES-256-GCM | SHA-384 |
| TLS_AES_128_GCM_SHA256 | ECDHE/DHE | Certificate | AES-128-GCM | SHA-256 |
| TLS_CHACHA20_POLY1305_SHA256 | ECDHE/DHE | Certificate | ChaCha20-Poly1305 | SHA-256 |
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