Server administration 2008/2012/2016/2019 (Active Directory, Group Policies, DNS, DHCP, WSUS, DFS, FSRM, NPAS, Hyper-V), backup management (Veeam Backup). Corporate antivirus server administration (NOD32). Installation, configuration and administration of LAN networks (wired and wireless) and network segmentation. Internet administration, Firewall, VPN, user support, process documentation and project management. Implementation and management of the ISMS and DRP.