[2 subnets, 1 LAN interface] How Do I block communication between them?

[MaxFontana]

Hi everyone.
I added a second subnet on the same physical lan interface which handles my network cabled pc's.
This second subnet is a set of laptop pc's connected via wifi which receive a dynamic IP from the dhcp server of the wireless controller.
So the scenario is:
subnet 10.0.0.0/24  desktop pc's
subnet 10.0.3.0/24  notebook pc's
Of course, as already said, everything under one interface.
Now what I want to achieve is to "hide" the 10.0.0.0/24 subnet to the notebook pc's and vice-versa.
At the moment the firewall is not blocking anything. is there a way to do it?
thanks
Max
Italy

[Metu69salemi]

do you use VLAN's?
if not try that, then you have 1 real interface and as many as you need virtual interfaces,
after that you can have more protected network.

But you may try to add rule that, from this subnet to another subnet anything is blocked.

[MaxFontana]

@Metu69salemi:

do you use VLAN's?
if not try that, then you have 1 real interface and as many as you need virtual interfaces,
after that you can have more protected network.

Thanks for this hint. I didn't try it yet.

But you may try to add rule that, from this subnet to another subnet anything is blocked.

doesen't seem to work :-(

[Metu69salemi]

Security by obscurity is never a good thing.. So i wasn't so surprised. There is no way to restrict them, if there is no other (v)lans

LEET ;)