Hi Steve,
Thanks again for your continued encouragement and the link to networking information. I’ll check it out.
I feel sure that once I understand the various parts of the puzzle ~ subnets / netmasks / ip forwarding / dns routing etc., that the Rpi will be more than capable of meeting those requirements.
It all seemed so simple at the outset, to share a working Internet connection, whether sourced from wifi or 4G, with a few other machines using the ethernet port and a hub. I’m actually surprised that my configuration doesn’t have an existing and up to date example on the Net.
If I’d gone for a wireless network there were plenty of examples of a Raspberry Pi based wifi access point, however I can’t be sure all my cameras in a given location will be close enough together for reliable wifi connectivity. Some construction sites require cameras 30-50 meters apart and often the subject building will come up in the middle and potentially block the signals.
As for security, it’s totally a non-issue for me. I’m not handling any sensitive data. My rigs take time lapse images of practically no interest to anyone but me and my client (a local builder), and, even when I manage to schedule the power correctly, the Rpi’s will only be active for a few minutes each hour, during work days. Not a very accessible or tempting target for wardriving hackers, not that we have any of those here in Byron Bay.
Right now, I am happy that I can achieve my immediate needs, so I’ll deploy this rig and make do with weekly trips to retrieve the images and, in the meantime I’ll read up on networking and do some trials on a test rig at home until it’s all working, then I can replace the guts of the time lapse rig. Fortunately it’s built so I can easily swap out the control board, from the metal box half way up the 4 meter pole it’s mounted on.
I hesitate to tug on your sleeve any further but thank you for all your time and thought
Cheers
Nigel
Nigel Haslam | Director
Motion Circus Pty Ltd. Byron Bay
t : + 61 2 8007 7338 | m : + 61 403 020 126
w: www.motioncircus.com
link to website
On Sat, Dec 15, 2018 at 8:11 AM Steve70565 <core_electronics@discoursemail.com> wrote:
. Not such an issue with wired connection but with WiFi and especially remote devices, you are providing doors into your network for a determined hacked to find. It depends if what you are working on has any privacy implications I guess, but as I said earlier, I’m old school.
Reading between the lines, I can’t help but think that you seem to be ‘re-inventing the wheel’ and are overlooking off the shelf solutions that have had years of development (i.e. quality routers) that are capable of fixing the problem. Just need some lateral thinking to work out what is best to do what you want with the minimum device count. Trust me, I have developed enough solutions over the last 45 years to understand just how easy it is to get tunnel vision and concentrate on resolving a problem that actually isn’t really there or is easily solved by buying the right bit of kit. I don’t want to discourage you at all, far from it but seem to be having basic issues. One project I am working on currently seems similar to yours - a central comm’s (Wifi, LTE, BTLE, SigFox & LoRA) ‘server’ with many remote, scattered devices providing data. The server uses multiple SD cards, which has taken a bit of effort to resolve, but is now working - the core products are not Rpi though. There are also OTA updates and management, local manual upgrades and data collection, Web Server and FTP components to cover all the client requirements.
I am happy to continue helping you as best I can but would prefer to do that outside this forum because the discussion will get quite technical and possibly move away from the ‘maker’ environment.
Regards
Steve W
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