Black Box Version 1.0 Manual de usuario descargar pdf (Pagina 6)

Overview

• Enroll device

–Installs profile linking device to MDM

• MDM server pushes message

–“Hey, call me”

• Device connects to server

–“You rang?”

• Server provides command

• Device sends response

MDM Server

Wake Up Device

Receive

Commands

Apple

Push Notiﬁcation

Server

Notifications - Client

• Device connects to Apple using SSL

• Two-way certificate validation

• Apple provides unique token to device

–Apps forward token to service providers

• Device leaves connection open

• Notifications flow from Apple to device

First, the device has to enroll with MDM (essentially, installing a

conﬁguration proﬁle that links the device to the MDM server).

Once that’s complete, the ﬂow of control is like this:

* The server queues up a command for the device

* It then sends a notiﬁcation to the device via the Apple Push

Notiﬁcation Service (APNS)

* The device receives the notiﬁcation, and contacts the server

* Once connected to the server, it downloads (and acts upon) the

queued command

Before we get to the meat of the MDM commands, let’s look more

closely at APNS.

The APNS connection is the only long-term connection established for

MDM, and serves as the conduit for all kinds of notiﬁcation trafﬁc to the

device.

When creating the APNS connection, the device ﬁrst checks Apple’s

SSL certiﬁcate. The Apple server also checks that the device itself has a

valid certiﬁcate (which was provided to the device, by Apple, when the

device was activated). So getting into the middle of this exchange

should actually be pretty difﬁcult.

Once the connection is established, applications request, through the

connection, unique Device Tokens, which they then forward to their

service provider.

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Black Box Version 1.0 Manual de usuario Pagina 6

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