Looks like I forgot to hit post on this yesterday. There is a easy way to do this, but requires a bit of setup.
- Create group policies for your network based on client needs. This is found under Network Wide > Configure > Group Policies
- Navigate to Security Appliance > Configure > Firewall
- In the Outbound Rules area under Layer 3, create a rule to Deny Any traffic from Any Source to Any Destination.
Now that you've done all this, for any client you want to allow Internet access, just assign them a group policy. If someone tries to plug into the MX device and they do not have a group policy assigned to them, they will not get Internet access. If you know the MAC address of the device prior to them connecting, you can add it under the clients page and assign a policy so that they will have access right away.
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