On 01/07/2012 02:01 AM, Ken Adler wrote:
I use  echo GET | openssl s_client -connect www.google.com:443 -state to 
troubleshoot https handshakes.

Is there a way to get it to return the Serial number (or thumbprint) of the 
server certificate?


openssl s_client -connect www.google.com:443 2>&1|openssl x509 -noout -serial

serial=4F9D96D966B0992B54C2957CB4157D4D

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