- Designed, Managed, implemented, and tested WAN for country- wide NGN networks, LAN for large enterprises with over 10K nodes including complicated technologies such as high availability, load balancing, security compliance, monitoring, and clustering for datacenter.

- Hardware: Server, Router, Switch, Firewall, SAN, AP, Modem, Workstation computer, Laptop, IP Camera and IP Phone

- Operating systems: Windows 2003/XP/ 2008/Win 7/2012/8/2016/10, Linux Ubuntu, CentOS, Mac OS, IOS and Android

- Networks: IPv4, VLAN, DNS, DHCP, RIP, IGRP, BGP, OSPF, PPP, SMTP, NAT, AD, CA, NLB, Mail Servers, Fileservers, DFS,WEB Servers, RAS and Cluster

- Security: ISO 27001, ISO 27002, CEH and Security+