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+# Test
+
+## Server  
+
+   - RootCA  
+      ```bash
+      $ openssl s_server -accept 8765 -key host/server.key -cert host/server.crt -CAfile rootca/rootCA.crt
+      ```
+   - ICA  
+      ```bash
+      $ openssl s_server -accept 8765 -key host/server.key -cert_chain ica/ICA.crt -cert host/server.crt -CAfile rootca/rootCA.crt
+      ```
+
+## Client
+
+```bash
+$ openssl s_client -connect localhost:8765 -verifyCAfile rootca/rootCA.crt
+```