System Administration and Server Virtualization, worked closely with development, storage, quality assurance, database, networking and customer support teams to meet business and technical demands Manual installation of Linux servers as well as using KICKSTART. Day to day user administration and management using NIS. Upgrading and patching of OS using YUM, RPM, Vast experience in configuration of APACHE, SMTP, and NAGIOS. Performance tuning and troubleshooting in Linux systems using commands such as top, free, swap, tcpdump, telnet, and netstat. Knowledge of files system management using NFS, SAMBA, FTP, and LVM. Hand on experience of DNS, TCP/IP networking services, firewalls, iptables, SELinux and NAS