Rebuild the whole network; install and manage active directory users and groups, design and deploy group policy object, manage two dsl lines, manage and troubleshoot print server, install and troubleshoot lan wan network hw sw, install, manage and troubleshoot dns server, install and manage nas server, monitor pcs and network utilization performance, monitor and maintain the internet access, manage and deploy remote installation server ris, manage remote access server and vpn connection; configuration and troubleshoot network devices switches and routers, planning, implementing; and maintaining a windows server active directory infrastructure.