> Managing Cloud Server> Virtual Environment with PROXMOX-VE> High performance shared storage server GlusterFS > Web Server Load Balancing using Piranha and HA-PROXY> Managing and Patching Windows Servers 2003/2008> Database Master-Slave> Shell scripting> Redhat Directory Server 8.0> Lamp Server for SugarCRM, Joomla and codeignator framework> Linux and PHP Local Repository Server> Mail Servers Zimbra and Postfix> Open Source Linux Based Router Firewall and VPN Server with Untangle and Endian> VLAN with Inter VLAN communication > Server Monitoring Tools Nagios, zenoss and Monit with perl script for SMS alert on Mobile.> SVN subversion Server> WAMP Server development PC with Windows XP / 7/ 8 or Linux Desktop > Fedora BOX to manage testing or backup restoration testing in virtual box servers> Elastix a open source VOIP Servers and IP Phones I experienced to configuration, hardening and maintenance of various Linux Distribution