# Disable the backend UI

If you want the backend not to be accessible from the frontend site, you can disable the entire Sitefinity CMS backend UI.

> important **IMPORTANT**: Disabling the backend UI will disable all routes starting with *yoursite/Sitefinity*. This includes all routes for Sitefinity CMS backend - */Sitefinity*, all service routes - */Sitefinity/Services*, routes for authentication/login and any other protected routes - */Sitefinity/\<anything else>*. Only the *SiteSync* and *LoadBalancing* modules routes will be allowed, if these modules are enabled in your site.

This scenario is useful if you have a load-balancing configuration and you want to disable the backend on all frontend nodes, but leave it enabled on nodes used for development.

To disable the backend UI, perform the following:

1. Click *Administration*  *Settings*  *Advanced*  *System*.
2. Select *DisableBackendUI* checkbox and click *Save changes*.\
   This settings makes a change to the file `~/App-Data/Sitefinity/Configurations/SystemConfig.config` by adding `disableBackendUI="True"`
3. To enable the backend UI, open the `SystemConfig.config` and delete `disableBackendUI="True"`

> info **NOTE**: If you have a load balancing configuration, make sure that the `SystemConfig.config` is configured differently on the node where the backend is enabled and on the ones where the backend is disabled.