How to Configure Port Isolation on CRS125-24G-1S-RM

hello friends ,
i have replaced my cisco 2950 switch with mikrotik CRS125-24G-1S-RM and now i want to configure this in SIMPLE
way ,

one port as uplink (port 1) connected to wan router and other 2-22 port as access port and 1 port( port 24) is for administrative purpose to access all device that are connected to 2 to 21 port . i have red the fouram but didn’t get solution.

i want all port do not talk to another port only communicate to up link port.


any help highly appriciated :slight_smile:

Regards
suraj kumar

http://wiki.mikrotik.com/wiki/Manual:CRS_examples#Port_Level_Isolation