NAT/MAPPING inside a VLAN

Hi, I got this problem here. In a RT450, in ETH5 VLAN71 I need to access a radio mikrotik, but my management network is connected in ETH1 with no VLAN configured.
Can I NAT port 80 of the mikrotik to my menagement network?
Or else, mapping the IP from inside the VLAN to an external IP address of my net?
Is it possible in any way?
Thanks,