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I have a WSUS server on a machine with 4 NIC ports. I have added a permanent route which "most of the time" forces the WSUS to use the desired NIC to get updates from Microsoft. (route -p add 0.0.0.0 mask 0.0.0.0 192.168.50.1 metric 1)

But when the server reboots it automatically recreates a route to the NIC card where the clients connect. (192.168.1.1) The result it most of the time after a reboot it will start using the other NIC to download updates, which rapidly consumes the cellular monthly bandwidth. (The cellular NIC is faster.) I have tried several things, including firewall settings in the Pepwave Surf SOHO router.)

How can I prevent the creation of the alternate 0.0.0.0 route or force the machine to ONLY use the desired port for internet access?

Whitekn3
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    It sounds like you have a default gateway configured on multiple network cards. You should configure the default gateway only on the network card that you want it to use to reach the internet. – joeqwerty Jan 12 '19 at 16:38
  • I think you just hit it. Ironically, in researching before I posted I found others with the same issue, and a few comments about "multiple gateways", but it didn't click. I'm testing it now. – Whitekn3 Jan 12 '19 at 16:47

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