I Configured & maintained a complete Network in GNS3 network simulator in University project as well as physically established complete network along with server setup for Nasksoft (UK based software house) , used Virtual box and VMware for installing & maintaining operating systems; Window Server 2012 R2 & Windows server 2016, Windows 7, 8 & 10 and Linux Ubuntu for users/clients and also configured, maintain Cisco, Mikrotik & TP link routers, switches & load balancer using networking protocols. Further I troubleshoot computers, laptops hardware, server hardware & VOIP Cisco phones too. Established Domain & sub domain on Servers, configured and maintained site to site VPN on routers and configured switches, users/client machines in main office & its sub branches respectively. Learned using Putty for manual configurations. Configured and maintained shared network drive, FTP server, Web server and Email exchange server like Outlook. Also travel to markets for purchasing IT goods and providing IT services to different client.