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Is it possible for a WiFi host to filter WiFi service by a computer's local IP, similar to how it's possible to filter WiFi clients by MAC Address?

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Typically a WiFi host, or router, will actually assign each client an individual IP address. However, most WiFi routers and access points are either firewalls or connected to a firewall. A firewall can be configured to filter traffic based on IP address, however I don't see that happening at the WiFi level.

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The wireless router provides the computer's IP address, so I do not think this would be possible.

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