Hello Guys, Please I have a major problem and I need everybody's help. I have a server 2008 Enterprise Domain (DC), it issues out DHCP Addresses to my local users. for my firewall, I have ISA server 2006 (Proxy Server). now, my problem is i need to only allow domain users access to my network. All non-Domain users should not be allowed access on my LAN (Not even IP Address should be assigned to them). This should be an automatic process, where the users should not be prompted for a login credential unless they are non-domain users. Management isn't giving me a new system, I must work with what i have. Please, can anyone help me out here? I have asked around, people say it can be configured with Active Directory but i cant find the setting in Group policy. Please i need help urgently. Thanks......