In network configurations where cluster Brokers are separated by a firewall, the firewall may terminate a connection if the connection remains idle for a long period of time. To prevent this from occurring, you can use the BrokerAdminClient.setRemoteBrokerKeepAlive method. This method causes a remote Broker to periodically issue "keep-alive" messages to another Broker in its cluster, preventing the connection between them from remaining idle for too long.