after day or two of googling, I still haven't found solution how to isolate my TV box connected on ether3 from LAN and allow to use only internet.
Now I have standard WISP AP setup when all lan ports are in single bridge.
Tried to move ether3 to separate bridge, assign dhcp... but without success.
I am not sure do I need WLAN or there is easier way for this task. I am stuck.
I was thinking understand a bit networking before first mikrotik
Thanks for any help