Microsoft Technology Licensing, LLC

Marie Hagman

Shai Herzog

Michael Eric Deem

Eric S Vandenberg

Bogdan M Tepordei

A general-purpose proxy mobile device management architecture. The architecture serves as a proxy for a mobile client seeking services from backend systems. A virtual client image of state information associated with the mobile client is stored such that when the mobile client interacts with the proxy, the virtual image updates to the latest client state. Based on the changes to the state, the proxy system asynchronously accesses one or more arbitrary services of the backend systems on behalf of the mobile client. When the mobile client connects to the proxy, the proxy will have the latest services associated with the states of the virtual image, and updates the state of the mobile client. Updating and accessing occurs asynchronously on the frontend between the proxy and mobile devices and on the backend between the proxy and the backend systems.

Mobile device management proxy system

Architecture for maintaining connection state of network address translation (NAT) devices by employing an out-of-band (OOB) technique externally to application connections without imposing additional requirements on the underlying native application(s). The OOB solution can be applied to arbitrary connections without requiring modification to an application protocol and works with TCP and UDP. A keep-alive (KA) application is employed as an OOB mechanism that injects KA packets that appear to the NAT device to be coming from the native connection. These injected packets fool the NAT device into resetting the inactivity timer for that connection, but do not fool or confuse the native application, which is oblivious to the spoofing. Accordingly, the connection will not terminate due to NAT timeouts, and therefore, a client/server protocol, for example, will not need to generate fake activity packets to keep the connection alive.

Out-of-band keep-alive mechanism for clients associated with network address translation systems

A stateful cache layer is created at a mobile device client that tracks the state on both the mobile device and management service. The states are synchronized between the mobile device and the management service on every management session. Through the statefulness of the cache layer, unauthorized changes on the mobile device are detected and accordingly handled such as internal correction or reporting to the management service for actionable instructions. A cache layer on the management server is configured to identify organizational policy changes that affect specific devices and initiate unsolicited immediate management sessions to update the configuration to the specific devices.

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Marie Hagman