router and 3200 port confige problem!!!urgent!

Question: i have 2 pc,1 pc installed R3,another installed BW,R3 system number 01,BW system number 00!!
i want to through interenet(1 ip address only) can access R3 and BW,so i must mapping 3200-3300 port to router is it?
how can i change 3200-3300 port for R3 or BW after i installed??
do i must use SAProuter??

i found i must mapping 3200-3300 all port in router,then SAPGUI can accesss!!!

Answer:
duplicate post locked.
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