1 files changed, 6 insertions, 73 deletions
diff --git a/doc/integration/cas.md b/doc/integration/cas.md
index 750c9aeb8a4..d2a29161a53 100644
--- a/doc/integration/cas.md
+++ b/doc/integration/cas.md
@@ -2,79 +2,12 @@
 stage: Manage
 group: Authentication and Authorization
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
+remove_date: '2023-08-15'
+redirect_to: '../administration/auth/index.md'
 ---
 
-# CAS OmniAuth provider (deprecated) **(FREE SELF)**
+# CAS OmniAuth provider (removed) **(FREE SELF)**
 
-WARNING:
-This feature was [deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/369127) in GitLab 15.3 and is planned for
-removal in 16.0.
-
-To enable the CAS OmniAuth provider you must register your application with your
-CAS instance. This requires the service URL GitLab supplies to CAS. It should be
-something like: `https://gitlab.example.com:443/users/auth/cas3/callback?url`.
-Handling for Single Logout (SLO) is enabled by default, so you only have to
-configure CAS for back-channel logout.
-
-1. On your GitLab server, open the configuration file.
-
-   For Omnibus package:
-
-   ```shell
-   sudo editor /etc/gitlab/gitlab.rb
-   ```
-
-   For installations from source:
-
-   ```shell
-   cd /home/git/gitlab
-
-   sudo -u git -H editor config/gitlab.yml
-   ```
-
-1. Edit the [common configuration file settings](omniauth.md#configure-common-settings)
-   to add `cas3` as a single sign-on provider. This enables Just-In-Time
-   account provisioning for users who do not have an existing GitLab account.
-
-1. Add the provider configuration:
-
-   For Omnibus package:
-
-   ```ruby
-   gitlab_rails['omniauth_providers'] = [
-     {
-       name: "cas3",
-       label: "Provider name", # optional label for login button, defaults to "Cas3"
-       args: {
-           url: "CAS_SERVER",
-           login_url: "/CAS_PATH/login",
-           service_validate_url: "/CAS_PATH/p3/serviceValidate",
-           logout_url: "/CAS_PATH/logout"
-       }
-     }
-   ]
-   ```
-
-   For installations from source:
-
-   ```yaml
-   - { name: 'cas3',
-       label: 'Provider name', # optional label for login button, defaults to "Cas3"
-       args: {
-         url: 'CAS_SERVER',
-         login_url: '/CAS_PATH/login',
-         service_validate_url: '/CAS_PATH/p3/serviceValidate',
-         logout_url: '/CAS_PATH/logout' } }
-   ```
-
-1. Change 'CAS_PATH' to the root of your CAS instance (such as `cas`).
-
-1. If your CAS instance does not use default TGC lifetimes, update the `cas3.session_duration` to at least the current TGC maximum lifetime. To explicitly disable SLO, regardless of CAS settings, set this to 0.
-
-1. Save the configuration file.
-
-1. For the changes to take effect:
-   - If you installed via Omnibus, [reconfigure GitLab](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure).
-   - If you installed from source, [restart GitLab](../administration/restart_gitlab.md#installations-from-source).
-
-On the sign in page there should now be a CAS tab in the sign in form.
+This feature was [deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/369127)
+in GitLab 15.3 and [removed](https://gitlab.com/gitlab-org/gitlab/-/issues/369128)
+in 16.0.