diff --git a/source/openssh-client/index.rst b/source/openssh-client/index.rst
new file mode 100644
index 0000000..a6425f0
--- /dev/null
+++ b/source/openssh-client/index.rst
@@ -0,0 +1,23 @@
+##############
+OpenSSH client
+##############
+
+*********
+Configure
+*********
+
+* /etc/ssh/ssh_config
+
+::
+
+  TODO
+
+**********
+Create key
+**********
+
+* ~/.ssh/id_rsa*
+
+.. code:: shell
+
+  ssh-keygen -b 4096
diff --git a/source/security.rst b/source/security.rst
index a020487..c4ae72d 100644
--- a/source/security.rst
+++ b/source/security.rst
@@ -5,4 +5,5 @@ Security
 .. toctree::
    :maxdepth: 2
 
+   openssh-client/index
    openssl/index