SAP Router and PI Integration Builder SXMB_IFR

I have found some information about this but I have yet not found the correct information. I want to use the transaction SXMB_IFR utilizing SAP Router outside of my company's network. How do I include this in my host file. For the sake of the discussion, lets say that the SAP Router String is /H/201.218.215.202/H/ and the IP address for the PI is 192.168.0.1

Thanks,

Jose