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This may seem obvious but after searching can't find an answer. I have built many smaller networks using static IP addresses where the default gateway is the router going to the internet.

I would like to add a private network that has no internet access and add things like backup NAS. In a simple scenario, say two servers and a workstation add a new switch, connect the NAS and the second NIC in the servers/workstation and just assign a unique (for our network) class C 192.168.0.0/16 (255.255.0.0) IP address/subnet.

The bit that confuses me is what to do about the default gateway, as no gateway as such is required. Do we need a router even though that network is only internal? If not how do I set this parameter?

Thank you

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The configuration you want is fine, there will be no default gateway on that subnet, so for instance on a Windows host or Linux GUI that field would be left blank in the network setup.

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