walled garden with all ports?

i have a mms video feed that i need to display pre-authentication in the hotspot.

i can not figure out how to do it because the walled garden restricts access that i need, and
i cant figure out the firewall rule to allow all access to that host.

the mikrotik is 172.16.0.20 and the box i need access to is 172.16.0.10 .. can someone point me in the right direction or something?

ip hotspot walled-garden ip add dst-address=your_host action=allow
should make the trick.