A network interface configured to receive and transmit remote memory access, RMA, communications on behalf of host computers coupled to the network interface, comprising: a plurality of host memory region counters, wherein each of the plurality of host memory region counters i) corresponds to one of a plurality of memory regions located in a physical memory of a host coupled to the network interface, and ii) includes a system utilization metric associated with its corresponding memory region; wherein one or more memory regions of the plurality of memory regions are registered memory regions, and wherein one or more memory region access keys are stored on the network interface, each memory region access key corresponding to one of the plurality of registered memory regions, and wherein the one or more memory region access keys are a shared secret with one or more remote hosts and are communicated to the one or more remote hosts out-of-band in encrypted form; a traffic monitor configured to update the host memory region counters in response to receipt by the network interface of requests to access the respective host memory regions; a controller configured to: access the plurality of memory regions on the host computer coupled to the network interface, receive a resource request message seeking system utilization data associated with a memory region identified in the resource request message, wherein the resource request message includes host memory access request information, determine whether the source of the resource request message is authorized to seek system utilization data associated with the memory region identified in the resource request message by using the host memory access request information and the memory region access key corresponding to the identified registered memory region stored on the network interface, and generate a response to the resource request message based on information stored in the host memory region counter associated with the memory region identified in the resource request message when the source of the resource request message is authorized. a plurality of host memory region counters, wherein each of the plurality of host memory region counters i) corresponds to one of a plurality of memory regions located in a physical memory of a host coupled to the network interface, and ii) includes a system utilization metric associated with its corresponding memory region; i) corresponds to one of a plurality of memory regions located in a physical memory of a host coupled to the network interface, and ii) includes a system utilization metric associated with its corresponding memory region; wherein one or more memory regions of the plurality of memory regions are registered memory regions, and wherein one or more memory region access keys are stored on the network interface, each memory region access key corresponding to one of the plurality of registered memory regions, and wherein the one or more memory region access keys are a shared secret with one or more remote hosts and are communicated to the one or more remote hosts out-of-band in encrypted form; a traffic monitor configured to update the host memory region counters in response to receipt by the network interface of requests to access the respective host memory regions; a controller configured to: access the plurality of memory regions on the host computer coupled to the network interface, receive a resource request message seeking system utilization data associated with a memory region identified in the resource request message, wherein the resource request message includes host memory access request information, determine whether the source of the resource request message is authorized to seek system utilization data associated with the memory region identified in the resource request message by using the host memory access request information and the memory region access key corresponding to the identified registered memory region stored on the network interface, and generate a response to the resource request message based on information stored in the host memory region counter associated with the memory region identified in the resource request message when the source of the resource request message is authorized. access the plurality of memory regions on the host computer coupled to the network interface, receive a resource request message seeking system utilization data associated with a memory region identified in the resource request message, wherein the resource request message includes host memory access request information, determine whether the source of the resource request message is authorized to seek system utilization data associated with the memory region identified in the resource request message by using the host memory access request information and the memory region access key corresponding to the identified registered memory region stored on the network interface, and generate a response to the resource request message based on information stored in the host memory region counter associated with the memory region identified in the resource request message when the source of the resource request message is authorized.