[Viewed Archive] Using PC/104 COTS Embedded System (ES) running DOS. Files transferred over Enet via FTP with Username & Password required from ES. Remote User Interface (Enet) has UN & PW at the Operator Terminal, but not at ES end. Although designed to run on non-public network, it CAN also run on any network!
Listened to archive. Answers to questions. 30 Yrs experience. Design Printers of labels and receipts for hospitals, restaurants, retail, etc. Connected via tcpip,serial,usb. Some have encrypted keys to authorize features. No particular protection from reverse engineering (other then convoluted code :-) ). Most code done inhouse including rtos and communication stacks. Currently working on bluetooth interface.
Rsar- Many devices allow JTAG to be turned 'off' after board level tests are completed. Makes returns testing more difficult, but it is an option. Some allow for JTAG to be turned back 'on' if a secret key is known...
?If you can comment on this today: How easily hacked are the cellular networks? I.e. capturing and decoding data transmitted over a 2G, 3G, or 4G network? We have heard how easy it was during the analog days - how about with today's networks?
DKH- IoT looks to be using some standard security capabilities but I expect some new standards to develop that take less processing power and that might use security 'servers' instead of securing every device. Will be an interesting evolution...
CPU- I don't have enough information to give you any best-in-class worst-in-class information, so it is best for you to dig into the details on specific manufacturers yourself. We will talk more in future classes about specific features you can check on...
? Is security mainly an issue only for things attached by IP address, or is it also an issue for items connected by serial or GPIB? I guess I'm wondering if security can be improved by not using ethernet on the "local" side of a gateway.
?We sometimes use PIC MCUs that have a code protection mechanisms against read and write. How do these compare to other chip manufacturers' own code security mechanisms? Which MCU maker has the best protection? The weakest?
best we can for legacy systems, but new systems undergo a vulnerabilty analysis for the hardware and appropriate measures are taken. Such as selecting CPU/MCU that are more secure, including flash memory on lower layers of the die, and encrypted external flash storage
My controls are currently islands-of-automation, and not connected to the internet, or to each other. I would like to connect them to the internet to have an opportunity for remote view, remote troubleshooting, remote code updates/ enhancements. These systems are deployed on ships - out of range of cellphone networks, but usually have some sort of sattelite network with a low bandwidth and a Cisco router, and latency issues.
Distributed network of sensors that monitor an industrial process. Data are gather at a central station that makes some small processing before it sends results further to be sored and processed in relation with other data in the factory.
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