On my good old DrayTek it's very easy: it shows me a matrix of check boxes and all I have to do is click the ones that correspond to ports that can 'see' eachother. Something like this:
Port 1 Port 2 Port 3 Port 4
VLAN 1 x x
VLAN 2 x x
VLAN 3 x x
So port 1-3 can all 'see' port 4 (the Internet router) but they can't 'see' eachother.
Can anyone please show me the steps to take to accomplish this? Thanks a lot in advance!