diff --git a/in/public/security/openssl/index.rst b/in/public/security/openssl/index.rst
index 2eebe7f..69276eb 100644
--- a/in/public/security/openssl/index.rst
+++ b/in/public/security/openssl/index.rst
@@ -19,6 +19,13 @@ List curves
 
  openssl ecparam -list_curves
 
+Generate DHparam file
+=====================
+
+.. code:: shell
+
+ openssl dhparam -out dhparam 4096
+
 Generate private key
 ====================