Dell E-Port Plus User Manual download pdf (Page 20)

6.2.2 Remotely initiated full control

Purely from a control perspective this is the most preferable, as full control of the implant can be

gained by the attacker at any time. The modem needs to be configured as "auto-answer" and

therefore, appropriate security measures, such as IP tables

[31]

need to be employed to ensure that

unauthorised access cannot be gained to the implant.

7 Physical space available within the docking station

The top of the docking station was removed by cutting away the plastic cover and the extendible

cover that fits behind the laptop (Figure 34). As can be seen, there is actually quite a large space for

additional electronics. This space shown assumes that the target organisation or individual does not

use an extended-life extra-large battery.

Figure 34: Docking station with cover removed

8 Power considerations

As docking stations are most likely to be permanently connected to a power source, providing power

to any hardware implant should not be a problem. The DC voltage provided by the power supply is

+19.5V. To power the implant we need +5V and although +5V is probably present in many different

places on the PCB, it’s not clear what current limiters may be present at various points, so the

simplest approach is to tap directly off the DC power input (Figure 35).

Figure 35: Rear of the main DC power input connector

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Dell E-Port Plus User Manual Page 20