diff --git a/service/ServiceConnectivityResources/res/values/config.xml b/service/ServiceConnectivityResources/res/values/config.xml
index 078a9eb..70ddb9a 100644
--- a/service/ServiceConnectivityResources/res/values/config.xml
+++ b/service/ServiceConnectivityResources/res/values/config.xml
@@ -107,4 +107,8 @@
     <string-array translatable="false" name="config_networkNotifySwitches">
     </string-array>
 
+    <!-- Whether to use an ongoing notification for signing in to captive portals, instead of a
+         notification that can be dismissed. -->
+    <bool name="config_ongoingSignInNotification">false</bool>
+
 </resources>
diff --git a/service/ServiceConnectivityResources/res/values/overlayable.xml b/service/ServiceConnectivityResources/res/values/overlayable.xml
index f0f4ae8..fd23566 100644
--- a/service/ServiceConnectivityResources/res/values/overlayable.xml
+++ b/service/ServiceConnectivityResources/res/values/overlayable.xml
@@ -30,6 +30,7 @@
             <item type="integer" name="config_networkWakeupPacketMask"/>
             <item type="integer" name="config_networkNotifySwitchType"/>
             <item type="array" name="config_networkNotifySwitches"/>
+            <item type="bool" name="config_ongoingSignInNotification"/>
 
         </policy>
     </overlayable>
diff --git a/service/src/com/android/server/connectivity/NetworkNotificationManager.java b/service/src/com/android/server/connectivity/NetworkNotificationManager.java
index b57ad5d..3dc79c5 100644
--- a/service/src/com/android/server/connectivity/NetworkNotificationManager.java
+++ b/service/src/com/android/server/connectivity/NetworkNotificationManager.java
@@ -280,7 +280,11 @@
                 .setContentTitle(title)
                 .setContentIntent(intent)
                 .setLocalOnly(true)
-                .setOnlyAlertOnce(true);
+                .setOnlyAlertOnce(true)
+                // TODO: consider having action buttons to disconnect on the sign-in notification
+                // especially if it is ongoing
+                .setOngoing(notifyType == NotificationType.SIGN_IN
+                        && r.getBoolean(R.bool.config_ongoingSignInNotification));
 
         if (notifyType == NotificationType.NETWORK_SWITCH) {
             builder.setStyle(new Notification.BigTextStyle().bigText(details));