A method and system for transmitting data from a computer network security device for monitoring at least one computer network node to an operations center for monitoring at least the computer network security device and to the computer network security device from the operations center in a managed computer network security system including at least the computer network security device and operations center, including establishing security information associated with the at least one computer network security device. The established security information is used to authenticate data transmissions from the computer network security device to the operations center. The established security information is used to authenticate data transmission to the computer network security device from the operations center.