Recent content by RoganDawes

  1. R

    SA households with batteries connected to Deye inverters could get paid R1,000 to R2,000 per year for sharing their storage

    TLS over TCP/IP to the WiFi dongle is one thing. But the inverter doesn’t talk that natively. The dongle talks modbus over rs232 to the inverter. Which has no security to speak of, unless they have implemented something non-standard over and above what the dongles are currently doing.
  2. R

    SA households with batteries connected to Deye inverters could get paid R1,000 to R2,000 per year for sharing their storage

    Mmmm, I have heard of this IoT. In reality, it's just a bunch of computers talking to each other, and if one computer says something, the other computer needs to verify that what it says is correct. As an information security practitioner, I know all about making computers do things their...
  3. R

    SA households with batteries connected to Deye inverters could get paid R1,000 to R2,000 per year for sharing their storage

    Curious to know how they verify that you are actually charging or discharging as instructed, Sounds like you could make a device that looks like a Deye inverter, and reports reasonable charge/discharge/SoC figures, but doesn't actually do anything at all. Not that I'm advocating that anyone...
  4. R

    watchOS 27 beta downgrade?

    No?
  5. R

    SA smart plugs that can be flashed with Tasmota

    Should have flashed it in the workshop!
  6. R

    watchOS 27 beta downgrade?

    Not scared, it's just my wife's phone, so trying to avoid unnecessary complications for her. She can wait until September :-)
  7. R

    watchOS 27 beta downgrade?

    I bought the watch second hand, already on 27 beta (which I was aware of). I was under the impression that the iStores could downgrade it, having done the same research that you did (well, without the clanker's input). However, now that I have the watch, and have actually tried to contact the...
  8. R

    watchOS 27 beta downgrade?

    Hey folks, I'm trying to downgrade a second hand Apple Watch SE 3rd Gen that is currently on 27 beta. Have been to Cresta iStore, chatted online with the iStore tech support, and emailed MacShack tech support. Nobody seems to have an Apple Watch Restore Dock, which is apparently required to...
  9. R

    Vumatel Fibre + ISP for IPv6

    Or else just "low priority".
  10. R

    Vumatel Fibre + ISP for IPv6

    If Afrihost can support it on AE, and CoolIdeas can support it elsewhere, what is the difference?
  11. R

    Hackers breached South Africa's top supercomputer and used it to mine crypto

    How amenable are HPC servers/algorithms to "suspend and resume" their jobs? Or is it more a "take one box at a time out of service, migrate their workload to a different server, patch it, and bring it back online, repeat 5000 times, then do the same for the management server(s)"?
  12. R

    Hackers breached South Africa's top supercomputer and used it to mine crypto

    Understanding that in general, a user-level account doesn't give you root, but also that there have been several Local Privilege Escalation vulns in Linux. Not sure if you were able to patch in time, but it would certainly have been one way to compromise other user-level accounts.
  13. R

    Hackers breached South Africa's top supercomputer and used it to mine crypto

    Great insight, thanks! Feels like a firewall is not required, just a simple packet filter on the existing router would do, but still, applying that to Tbps of traffic would probably significantly increase the load on the router. And of course, if the ssh key for a legit user is compromised, all...
  14. R

    Hackers breached South Africa's top supercomputer and used it to mine crypto

    Curious to know whether the nodes have direct internet access (inbound or outbound), or whether it is all routed through a control plane. If the latter, it would significantly reduce the scale of an investigation, but I could imagine that there might be a need for high-speed data access from...
  15. R

    ESPHome+Geyserwise Smart Thermostat

    Quick update to this project: A friend implemented this, and went the DS18B20 route. He used one of the sensor in a stainless can units, and was able to get the provided extension wire through the Geyserwise thermostat, after reaming out the hole closest to to terminals a little. He did have to...
See more
Back
Top
Sign up to the MyBroadband newsletter
X