DC,DNS, DHCP,IIS,IPsec,WSUS,NAT,NAP,RAS,Routing,FS, Hyper-V, RAID ? FirewallSystem(ISA\TMG\PFsense\ Sophos/H3P /FortiGet ) ? Systems VirtualizationVMware&ESXI & VCenter & WebClient&Storage VM. ? KnowledgeExchange Server2007 & 2010 ? Hotspot Server (AntaMedia\ MikroTik\Engine)