diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 5bd7735..5a9e7d3 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -38,6 +38,8 @@ def render_csv(param)
   end
 
   def authenticate
+    use_fake_auth and return if Rails.application.config.use_fakeauth
+
     cas_data_file = "#{ENV['CAS_DATA_DIRECTORY']}/#{cookies[:MOD_AUTH_CAS]}"
     user_data = {}
 
@@ -80,4 +82,18 @@ def authenticate
   def is_admin
     redirect_to root_url unless @session_user.superadmin
   end
+
+  def use_fake_auth
+    fake_user = User.where(email: 'timetracker_fake_user@example.com').first
+
+    if fake_user.nil?
+      fake_user = User.create!(
+        username: 'timetracker_fake_user',
+        email: 'timetracker_fake_user@example.com',
+        superadmin: true
+      )
+    end
+
+    @session_user = fake_user
+  end
 end
diff --git a/config/application.rb b/config/application.rb
index 8ba577e..3e20e9b 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -89,5 +89,11 @@ class Application < Rails::Application
     # TODO: To make the CMS work, can be removed when the CMS is ready to work
     # with the latest Rails version.
     config.active_record.yaml_column_permitted_classes = [Symbol]
+
+    # Set host allowed by the application
+    config.hosts << ENV['ALLOWED_HOST'] if ENV['ALLOWED_HOST'].present?
+
+    # Set the default value for bypassing the authentication
+    config.use_fakeauth = false
   end
 end
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 9dff2ee..34286a9 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -88,4 +88,7 @@
 
   # Allow any hostname
   config.hosts.clear
+
+  # In the development mode, you may want to avoid using the CAS server.
+  config.use_fakeauth = (ENV['USE_FAKEAUTH'] == 'true') || false
 end
diff --git a/config/environments/test.rb b/config/environments/test.rb
index efee233..a134055 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -64,4 +64,7 @@
   config.active_storage.service = :test
 
   config.maintain_test_schema = false
+
+  # In the test mode, you may want to avoid using the CAS server.
+  config.use_fakeauth = (ENV['USE_FAKEAUTH'] == 'true') || false
 end