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I build my security camera NVR servers with two NIC’s. One NIC is for public access on the owners LAN (and WAN), and the other NIC is for the private network for the cameras themselves.

The private camera network has no gateway and everything is static.

What I’d like to know is how do I route camera rtsp, http and ftp traffic between the cameras to the public gateway so they can get to the internet?

This is all outgoing traffic for steaming to YouTube or sending snapshots via ftp.

For instance. NIC1 IP is 10.1.10.50 with a gateway of 10.1.10.1 NIC2 IP is 10.100.136.50 with no router, no gateway, cameras are static 10.100.136.51~ /24

It would only be one or a few cameras that need access to the gateway.

I’m just having a hard time getting my head around what has to happen to make this work. The camera needs a gateway address but without a router, what does the magic?

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    Isn't "the private camera network has no gateway" in direct contradiction with "how do I route [...] traffic between the cameras to the public gateway"? – AlexP Jun 17 '18 at 20:17

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