diff --git a/sysadm/network-architecture/how-to-access-firewall-settings.rst b/sysadm/network-architecture/how-to-access-firewall-settings.rst
new file mode 100644
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+++ b/sysadm/network-architecture/how-to-access-firewall-settings.rst
@@ -0,0 +1,2 @@
+How to access firewall settings
+===============================
diff --git a/sysadm/network-architecture/how-to-upgrade-firewall-os.rst b/sysadm/network-architecture/how-to-upgrade-firewall-os.rst
new file mode 100644
index 0000000..a3b4991
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+++ b/sysadm/network-architecture/how-to-upgrade-firewall-os.rst
@@ -0,0 +1,2 @@
+How to upgrade firewall OS
+==========================
\ No newline at end of file
diff --git a/sysadm/network-architecture/index.rst b/sysadm/network-architecture/index.rst
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+++ b/sysadm/network-architecture/index.rst
@@ -0,0 +1,10 @@
+Network architecture
+====================
+
+.. toctree::
+   :titlesonly:
+
+
+   reference-network-configuration
+   how-to-access-firewall-settings
+   how-to-upgrade-firewall-os
diff --git a/sysadm/network-architecture/reference-network-configuration.rst b/sysadm/network-architecture/reference-network-configuration.rst
new file mode 100644
index 0000000..fab7d36
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+++ b/sysadm/network-architecture/reference-network-configuration.rst
@@ -0,0 +1,2 @@
+Reference: Network configuration
+================================