Mac OS Firewall
You may find that you are unable to reach resources from your guest VMs that are hosted on your host machine. This can be caused by firewall rules blocking access to nginx. Verify that your firewall is configured properly:
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Open System Preferences
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Select Security & Privacy
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Select the Firewall tab
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Click the lock to make changes
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Make sure your firewall is enabled
This is a security best-practice. Do not disable it!
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After granting access, select the Firewall Options... button.
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Make sure that nginx, node, etc., are set to Allow incoming connections (there should be a green dot next to them)
