I have more than 7 years of experience as a network & system administrator working in virtualized VMware/Hyper-V environement with Linux & Windows Servers/Clients, Exchange, Office 365, Mikrotik, Cisco, Zyxel Firewall, PBX ( FreePBX , Elastix , Vicidial ). I am certified in Linux (LPIC-2), Microsoft (MCP) and Cisco CCNA.