I see manual on your site: http://wiki.mikrotik.com/wiki/Forwardin ... nternal_IP
/ip firewall nat add chain=dstnat dst-address=69.69.69.69 protocol=tcp dst-port=59000 \
action=dst-nat to-addresses=192.168.1.101 to-ports=3389
This does not work!
Only when I added an additional Firewall Filter Rule
chain=forward
dst.address=192.168.1.101
protocol=6(tcp)
dst.port=3389
action=accept
it working.