WRO Login Protection

Added topic in security guide:
    - openstack-login-protection

Acted on comments with input from dev.

Worked on Greg's comments.

Fixed formatting and added table heading.

gerrit review: https://review.opendev.org/c/starlingx/docs/+/798128


Signed-off-by: Adil <mohamed.adilassakkali@windriver.com>
Change-Id: I0e9a76068443510bdd028cdc59f40d34c1628b8c

doc/source/security/openstack/index.rst

@@ -19,3 +19,4 @@ Access the System
    install-rest-api-and-horizon-certificate
    openstack-keystone-accounts
    security-system-account-password-rules
+   openstack-login-protection

doc/source/security/openstack/openstack-login-protection.rst

@@ -0,0 +1,156 @@
+..
+.. _openstack-login-protection:
+
+================
+Login Protection
+================
+
+.. rubric:: |context|
+
+The objective of login protection is to increase the overall security of the
+system, thus preventing password-guessing attacks such as brute force. It is
+implemented on Keystone service and it applies to all the services that depend
+on it, such as Horizon.
+
+When a user fails to login consecutively for a configured number of times, the
+system will prevent the user from authenticating via Keystone for a configured
+amount of time.
+
+.. note::
+    User admin is not affected by the login protection. For more information,
+    see
+    `https://docs.openstack.org/keystone/pike/admin/identity-security-compliance.html
+    <https://docs.openstack.org/keystone/pike/admin/identity-security-compliance.html>`__.
+
+    Login protection is enabled by default to lockout a user on 5 consecutive
+    login failures, for a lockout duration of 1800 seconds.
+
+    The following procedure allows you to customize the behaviour.
+
+.. rubric:: |proc|
+
+Keystone Helm Chart Override
+****************************
+
+The login protection has two key parameters:
+
+* parameter for the number of failed attempts to lockout the user
+  (lockout_failure_attempts)
+
+* parameter for the period in seconds that the user remains locked out from
+  authenticating on Keystone (lockout_duration).
+
+The customization of these parameters is done via Helm overrides.
+
+#. Set up admin privileges.
+
+   .. code-block:: none
+
+       $ source /etc/platform/openrc
+
+#. Create the ``keystone-login-protection.yml`` Helm overrides file.
+
+   .. code-block:: none
+
+       conf:
+         keystone:
+           security_compliance:
+             lockout_failure_attempts: <integer>
+             lockout_duration: <integer>
+
+   Where ``lockout_failure_attempts`` is the number of failed attempts
+   (defaults to 5 attempts) for locking out the user temporarily, and
+   ``lockout_duration`` is the period (defaults to 1800 seconds) that the user
+   remains locked out from authenticating via Keystone.
+
+   .. note::
+
+       Login protection is enabled with the default values stated above.
+
+#. Run the following command to apply Helm override.
+
+   .. parsed-literal::
+
+        ~(keystone_admin)]$ system helm-override-update --reuse-values --values keystone-login-protection.yml |prefix|-openstack keystone openstack
+
+#. Run the following command to check applied user overrides.
+
+   .. parsed-literal::
+
+        ~(keystone_admin)]$ system helm-override-show |prefix|-openstack keystone openstack
+
+   The following output is shown for the user_overrides property.
+
+   .. code-block:: none
+
+        +--------------------+-----------------------------------------------+
+        | Property           | Value                                         |
+        +--------------------+-----------------------------------------------+
+        | user_overrides     | conf:                                         |
+        |                    |   keystone:                                   |
+        |                    |     security_compliance:                      |
+        |                    |       lockout_duration: <integer>             |
+        |                    |       lockout_failure_attempts: <integer>     |
+        +--------------------+-----------------------------------------------+
+
+#. Run the following command to reapply OpenStack with the updated Helm
+   override values.
+
+   .. parsed-literal::
+
+        ~(keystone_admin)]$ system application-apply |prefix|-openstack
+
+   .. note::
+
+       |prefix|-openstack application must be in *Applied* or *Uploaded* state
+       for the command to work.
+
+#. Wait for the apply to complete.
+
+   .. code-block:: none
+
+       $ watch -n 5 system application-list
+
+Helm Chart Overrides Removal
+****************************
+
+This section details how to restore the default values for the Login Protection
+feature by removing the Helm overrides.
+
+#. Set up admin privileges.
+
+   .. code-block:: none
+
+       $ source /etc/platform/openrc
+
+#. List Keystone Helm overrides with the following command.
+
+   .. parsed-literal::
+
+        ~(keystone_admin)]$ system helm-override-show |prefix|-openstack keystone openstack
+
+#. Create a new ``keystone-helm-overrides.yml`` with all user overrides except
+   ``lockout_failure_attempts`` and ``lockout_duration`` parameters.
+
+#. Run the following command to update the override with the created file.
+
+   .. parsed-literal::
+
+        ~(keystone_admin)]$ system helm-override-update --values keystone-helm-overrides.yml |prefix|-openstack keystone openstack
+
+#. Run the following command to reapply OpenStack to restore default values.
+
+   .. parsed-literal::
+
+        ~(keystone_admin)]$ system application-apply |prefix|-openstack
+
+   .. note::
+
+       |prefix|-openstack application must be in *Applied* or *Uploaded* state
+       for the command to work.
+
+#. Wait for apply to complete.
+
+   .. code-block:: none
+
+       $ watch -n 5 system application-list