I am a System Administrator focused on both Microsoft & Linux environments with 9 years of professional experience on IT companies. I have a lot of experience in Linux ( Centos, Redhat, Fedora, Ubuntu, Debian, Gentoo, Slackware ), Solaris, xBSD ( FreeBSD, OpenBSD), vpn ( openswan - ipsec, openvpn, l2tp, pptp ), clustering ( LInux Virtual Server, Linux HA, vrrp, Solaris Cluster ), cloud computing, load balancing ( f5, haproxy ), VoIP ( asterisk ), databases ( MySQL, PostgreSQL, MongoDB), LDAP, web services ( Apache, Nginx, varnish, Squid ), security ( penetration testing, firewall policy design, IDS, IPS, ), control panels ( CPanel, Plesk, Virtualmin, Ensim ), Virtualization ( VMWare Virtual infrastructure - VSphere, amazon EC2 ).