- Good at Windows and Linux System: - Good at CCNA: Routers, Switches, Firewalls, LAN, WAN, DNS, DHCP. - Knowledge Programming Languages: Python / Shell Scrip . - Experience Email System: Zimbra, iRedMail, Postfix. - Experience Software System: - Experience Storage Systems: Cloud Storage (OwnCloud, Seafile), Network-attached storage (NAS), HTPC. - Experience Networking Services: Support and Troubleshooting, LAMP / LDAP / SAMBA / AD, OpenVPN, VoIP, Monitoring, Firewalls, Load Balance, Backup and Recovery, Proxy Server, Hyper-V / Xen Server.