Hello,
The Splunk Mobile App does support direct notifications, even if your Splunk server is behind a proxy. It does require installation of the Splunk Add-on for Mobile Access.
Once you have installed the Splunk Add-on for Mobile Access, follow the notification configuration steps here: http://docs.splunk.com/Documentation/MobileAddon/2.3.0/Install/Configurenetwork
These steps do however require internet access in order to work. So unless you have any way of staying connected to the internet, you won't be able to receive notifications.
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