(1) Windows
- Knowledge including OS ,SAN storage, cluster setup and data backup 
- Configuration active directory (domain controller) & group policy 
- Set up DHCP & DNS server 
- Exchange mail configuration
- Hypervisor configuration
(2) Linux
- Server installation and hardening setup
- Nginx + Tomcat + Mysql setup
- Docker configuration
- Monitoring configuration (PRTG , MRTG ,cacti ,nagios)
- Automation script create (Ansible)
- KVM configuration
- Rsyslog server setup
(3) Network & Security
- Knowledge of fortinet , Cisco ,Palo Alto firewalls
- LAN/WAN network configuration
- Intrusion Prevention System (IPS) configuration 
- Cisco ASA configuration 
- Peplink load balancer configuration 
- Graylog configurtion