On 2023-07-17 22:47, joe a wrote:
On 7/17/2023 4:30 PM, Carlos E. R. wrote:
On 2023-07-17 18:10, Daniel Bauer wrote:
Am 17.07.23 um 17:52 schrieb Freek de Kruijf:
Op maandag 17 juli 2023 17:40:42 CEST schreef Daniel Bauer:
BUT:
Switching the cable again to the laptop, the camera booted.
Where does the camera boot from? An internal resource or an external resource, like from your laptop.
The cameras have their own web-interface that is reachable via their IP with firefox (in my case).
During boot where does it get its IP address from? A DHCP server on your laptop?
The cameras have a settings page, where (beneath a lot of other things) their fixed IP is set.
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The eth0 IP is set fixed ("manual" for IPv4 in Network manager settings) on both the laptop and the pc, so there should be no DHCP.
Is there another outside resource needed when booting, which is not available.
No. There is a "reset" (to factory default) button, and a "reboot" button in the camera's web-interface. I think it does the reboot all by itself.
As much as I know everything is saved within the camera (settings are the same, no matter from which computer I connect to them).
Nevertheless, there is something the cameras want from the laptop, and if the laptop is not present, they stall.
You could use "ethereal" or "tcdump" to log the connection of one camera to the laptop when you boot that camera.
I've not read each and every post, but I suspect the cameras will turn out to be set to obtain address via DHCP, the LAPTOP is enabled to provide DHCP (as server) and the PC is not.
No, he said they are configured on fixed addresses.
As your cameras and computer are on an isolated network, they can not get infected by malware, so you could disable the automatic boot.
Not a sure bet. MALWARE can hitch a ride on removable media. "AIR GAP" is not a panacea.
Common... it is Linux, and he is not daft. -- Cheers / Saludos, Carlos E. R. (from 15.4 x86_64 at Telcontar)