SAP is one of the best-known ERP on the market and widely used because of the great advantage it presents in the integration within the companies and the large number of modules that it presents for a lot of functionalities. This article will show how, in case of not having well-fortified our SAP system accessible from the Internet, it is possible to extract and interact directly with the hosts of the internal network of a company. Bring the hosts that are in the DMZ of the corporate network.