I would like, if possible, get a confirmation on how to split the switch in 3 parts. None of which should have any access to the others internally. (one is supposed to handle the incoming connection, one is for the server side of the network, and the third is for client computers.)
On every port there will be a computer at this time. Further down the road there will probably be more switches, on the client side.
The incoming connection is providing a DHCP service, which cant be allowed to reach more then the first 5 port, and then there is a DHCP server providing the other two Vlan with its own DHCP service. And off course, since the idea is to split up secure, and insecure systems, the two Vlan hosting servers, and clients, cant be allowed to communicate with each other, unless it passes outside the switch. (through firewall)

Is this at all possible?
I feel i might not be making myself completely understandable as well. I'm going to try and work something more visual out this evening.