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Counter Measures Protection Domain (PD) Data buffers associated with an STag can be accessed only through connections in the same PD Limit CQ access to connections in the same PD Limit STag scope Limit SdTag usage to a single connection, or connections in the same PD Limit the time the STag is valid by invalidating STag when data transfer is over Limit the memory the STag can access by setting base and bounds to just the intended buffers |