Verify that SSL caching is working

This post was published 8 years, 1 month ago. Due to the rapidly evolving world of technology, some concepts may no longer be applicable.

To verify that SSL caching is on, check the Session-ID across multiple sessions (i.e. resume/reconnect) – they should be the same:

openssl s_client -host HOSTNAME -port 443 -reconnect | grep 'Session-ID:'

The equivalent, using gnutls-cli should be:

gnutls-cli -V -r HOSTNAME |grep 'Session ID'

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