NAT                                    NAT
  My machine                         |       {{ .Hostname }}        |       Remote Machine
 +----------+                        |            +----------+              |        +----------+
 |          |<local_service_port>    |        {{.Pp}}|          |{{.Pp}}          |  {{.Rp}}|          |
 |          +<-----------------------+----------->+          +<-------------+------->+          |
 +----------+                        |            +----------+              |        +----------+
                                     |                                      |