Paper describing how to reuse dumped portmapper data on one machine in order to still make use of rpc services on a remote machine without portmapper being exposed.
You can download it from the following link: https://packetstormsecurity.com/files/download/56077/exploiting-rpc.pdf
Source: https://packetstormsecurity.com/files/56077/exploiting-rpc.pdf.html