So I try to explain the dilemma.
I have 2 groups of clients and one server. I want these groups to only communicate with the server. This means that each device in these groups should see the server, but not the devices in the other group.
Is it even possible?
I tried to solve this problem by assigning different masks like this:
Server: 192.168.1.1 / 255.255.255.0 GroupA: 192.168.1.10 - 120 / 255.255.255.128 GroupB: 192.168.1.130 - 250 / 255.255.255.128
I thought if I do it like this these groups can't see each other but they can see the server. It turns out that due to the different mask they can't see the server either. Or am I missing something?
It would be much better if the devices in the same group couldn't see each other too, but I guess that's not possible, right?