Quick reference for enabling trace level logging from Global Security Kit, which is the SSL provider for IBM HTTP.
First, on either your windows or unix, you need to set an environment variable for the user that runs the process.
export GSK_TRACE_FILE=/tmp/gsk_ssl_trace.log
(I think on windows you set a new Environment Variable at the global level to do the same thing)
Lastly, you need to set the following in your httpd.conf
Restart Apache and you will now get a LOT of information. Be sure to change this back once you have completed your tests, or be deluged with verbose logs…