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security:openssl [2021/09/14 14:35] – gerardorourkesecurity:openssl [2026/08/13 11:37] (current) – [Retrieve the Certificate for a specific FQDN / TCP Port] gerardorourke
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-====== Open SSL ======+====== Open SSL TIPS ====== 
 + 
 +===== Check TLS Version supported by a Server ===== 
 + 
 +<code> 
 +openssl s_client -connect www.google.com:443 -tls1_3 
 +openssl s_client -connect www.google.com:443 -tls1_2 
 +openssl s_client -connect www.google.com:443 -tls1_1 
 +openssl s_client -connect www.google.com:443 -tls1 
 +</code> 
 + 
 +===== Retrieve the Certificate for a specific FQDN / TCP Port===== 
 + 
 +<code>openssl s_client -connect <hostname>:<port> -showcerts</code> 
 +<code>openssl s_client -connect sse9.public.wamswxc-p-2.prod.infra.webex.com:8934 -showcerts</code> 
 + 
 + 
  
 ===== SSL Commands===== ===== SSL Commands=====
  • security/openssl.1631626556.txt.gz
  • Last modified: 2021/09/14 14:35
  • by gerardorourke