diff --git a/in/personal/server/index.rst b/in/personal/server/index.rst
index 7817483..890edfd 100644
--- a/in/personal/server/index.rst
+++ b/in/personal/server/index.rst
@@ -296,3 +296,76 @@ Prepare a grub.cfg
          masquerade
      }
  }
+
+Certificate
+-----------
+
+* /etc/nginx/rwx.work
+ * key.pem
+ * bundle.crt
+
+::
+
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----