I have a couple HP ProCurve 1810G-24V2 switches. I repair computers in my office and I have a separate VLAN set up for virus-infected computers that only allows ports 80 and 443 in or out to prevent those machines from infecting other computers on the network. I have a bit of a problem though - my 1810G-24V2 switches don't seem to offer port level security that would prevent machines on the same VLAN from "talking" to each other. Can anyone recommend a low-power, low noise, 24 port rack-mount switch that would have this feature? I have really liked my 1810G series switches and will be keeping the 2x of them I already have for the other aspects of my network but I would definitely be interested in a 3rd 24-port switch that would give me that added security. Thoughts?