let there are three switch and there are 3 ree valn craed 
on each switch that is vlan 2 on first switch valn 3 on 2nd 
switch and vlan 4 is cretaed on switch 3
i have implemnted intervlan routin through ciso switchses.
the router is conected through its fa0/1 port by one switch 
and  and the two switch are trunked with each other 

now question is that we want to comuniacte betwwen vlan but 
does alse want that only vlan 2 is allow to access internet
(ISP)which is conected through s0 interface of router.and 
no any vlan can access that internet.what should be 
solution.