Thanks, I think I understand now. Any idea of the cheapest kind of switch that will do this?

That would require me to know which ports and IPs the camera system uses. I couldn’t find that in the documentation, is there any way I can find out myself? Packet sniffing for instance?

Haha nice one. Pity the camera system might get fried too 🤣

How would devices connect if DHCP is disabled? Sorry still new to this.

It’s actually a DVR connected to 6 cameras, but the DVR physically resides in a neighbor’s garage (long story). I’m concerned someone in the neighbor’s garage could potentially disconnect the cable, plug in an unmanaged switch and put the DVR in the switch, then use my internet connection for potentially illegal activity - so I want to make sure that only the DVR can actually access my network from the wire and absolutely nothing else.

Yes, but no good replies so I figured I’d simplify the question greatly, and now we’re getting somewhere 😁