Abstract: A communication node and corresponding method for processing data communication passing through the node between a first data network and a second data network is described. The method includes detecting an event associated with data communication arriving at the node from the first data network, and determining whether the data communication is to be suspended for service at the node based on the detected event. Suspended data communication is processed based on information in the data communication. Return data communication arriving at the node from the second data network in response to the processed data communication from the first data network is detected. The detected return data communication is allowed to pass through the node without processing the detected return data communication.