Hi People We have a router in our office that we get our internet from. We use the routers dhcp to get our IP's. We dont have a domain, its just a normal workgroup. The guys are abusing the internet. Can anybody give me any tip of blocking out the internet and only use it for our mail. The company does not want to buy licenses so im forced to look for open sourced software. Basically I just want to control internet access and leave mail open through a workgroup. Please help !!!