SSL/TLS Handshake Timeline

Visualize the SSL/TLS handshake process as a timeline

Domain

Port

Handshake Timeline

About TLS Handshake Timeline

Visualizes TLS handshake timing breakdown showing DNS lookup, TCP connection, TLS negotiation, and data transfer phases. Identifies performance bottlenecks in the connection process.

How to Use

1Enter the domain name and optional port number.
2Click "Get Timeline" to capture the handshake timing breakdown.
3Review each phase of the handshake with timing details and descriptions.

Use Cases

•Performance optimization by identifying slow handshake phases
•Latency debugging for TLS connection establishment issues
•SLA monitoring to ensure handshake times meet performance targets

Frequently Asked Questions

The timeline measures DNS resolution, TCP connection establishment, TLS negotiation (including ClientHello, ServerHello, certificate exchange, and key exchange), and the first data transfer.

Slow handshakes can be caused by high latency networks, deep certificate chains requiring multiple round trips, OCSP stapling delays, or server-side processing bottlenecks.

Enable TLS 1.3 for faster handshakes, use OCSP stapling, enable session resumption, reduce certificate chain depth, and consider deploying TLS sessions or tickets.

Tips & Best Practices

•Analyze handshake timelines to identify performance bottlenecks
•Compare timelines across different cipher suites and protocols
•Use timeline analysis to optimize TLS handshake configuration
•Monitor timeline changes after server configuration updates

Technical Details

Phases: ClientHello, ServerHello, Certificate, Key Exchange, Finished
Timing: Microsecond-level timing for each handshake phase
Analysis: Bottleneck identification and optimization recommendations
Visualization: Timeline diagram showing handshake progression