Freelance System Administrator experience with 20 years experience. I start playing Slackware 2.2 with kernel 1.2.1 in 1996, and Solaris on Sun Sparc Server 20 in 1998. Then i start learning FreeBSD, OpenBSD, Redhat, Suse and other Linux Distros. I have deployed, maintained various application (Web Server, Email Server, DNS, Database Server, File Server etc) both for private sector (Small Enterprise to Large Enterprise) and public sector I have full VoIP experience setting up peering and interconnect with Big VoIP carrier and Telecom Operator Also having deep knowledge on Virtualization (OpenStack, KVM, VMWare, Docker, Kubernetes etc)