My Proficiency/Expertise are:
[System and infrastructure]
-Linux Server: Debian, Ubuntu 14/16, Centos, Redhat, FreeBSD
-Windows Server: Win server 2008,2012, 2016
-Services : Active Directory, DNS, DHCP
-Database Server: MYSQL, MS SQL,
-Virtualisation: Vsphere, Esxi, HyperV,
-Back up Solutions: Acronis
-File Server : Windows file server, Samba
-Mail Servers: Exchange server ,Office 365, Postfix
-Web servers: Apache, PHP, IIS,
[Network]
-Routers : Cisco, Linksys, Netgear, Draytek
-Switches : Cisco layer 2/3, HP 3
-Firewall : ASA, BARRACUDA
[Voip/ipbx]
-3CX
-Asterisk
-FreePBX
[NAS Server]
QNAP, Synology,
[Programming]
HTML, PHP, Java Script, JAVA