Abstract: A method for securely monitoring and controlling a distributed energy resource is disclosed. One method includes utilizing at least one physical switching component to enable a communication protocol from among a plurality of communication protocols in a firewall gateway device that is protecting a resource device and receiving, at the firewall gateway device, one or more packets associated with ingress messaging directed to the protected resource device. The method further includes identifying the one or more packets as suspicious packets if the ingress messaging fails to correspond to the enabled communication protocol and conducting a remediation action in response to the identifying of suspicious packets or in response to detecting a local problem with at least one internal component of the firewall gateway device.