I have 15 systems on my LAN/WAN network. 8 wired through a switch, and 7 wireless. I have a net gear wireless router which acts as my internet gateway and through which I have allotted static IP addresses to all the systems. Since all systems have access to internet, there is lot of unauthorized and excess usage. I wish to limit internet connection only to some systems and block internet connection in others without effecting their access to the LAN. These systems which I want to block must be able to continue access to shared resources across other systems in the network but not get internet connection. Please help.
Out of the 15 systems, I gave fixed IP allotments (thorught the router) of 192.168.0.2 to 192.168.0.9 to the 8 systems to which I wanted to permit the internet connection. Then I blocked "http" and "ssl" services to all IPs from 192.168.0.10 to 192.168.0.254. Now my problem is solved.