TLS 1.3 significantly reduces the number of round trips and eliminates outdated cryptographic algorithms. How do you assess the impact of these changes on the practical security of web applications? To what extent could the reduced handshake time affect the effectiveness of downgrade attacks? Share your experience with configuration, any compatibility issues you've encountered, and your recommendations for migrating from older protocol versions.
How does TLS 1.3 improve connection security compared to TLS 1.2?
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TLS 1.3 does eliminate a lot of outdated ciphers, but I'm curious about how you approach selecting Diffie-Hellman groups (ECDHE) in production. In some projects, we've run into cases where older browsers refuse to work with the X25519 curve, even though it's considered more secure and faster. What strategies do you use to maintain compatibility without rolling back to weaker groups?
I'd also like to hear about real-world experiences with configuring TLS 1.3 on load balancers—have you encountered issues with client-side session caching when an older client tries to re-establish a session after the server has been updated? How do you handle these conflict scenarios to avoid compromising either security or user experience?