If you have targets, controllers and severs on different networks that cannot directly contact each other you can install and configure gateway support.
IBM® Endpoint Manager for Remote Control provides two ways to install the gateway support. If you have access to the IBM Endpoint Manager console use the deployment fixlets to deploy gateway support. For more details, see the IBM Endpoint Manager for Remote Control Console User's Guide. Alternatively you can use the IBM Endpoint Manager for Remote Control gateway support installation files.