Linux system administrator NFS,Linux, LVM, VxVM & VCSServer, Squid Server, Apache Server, Linux, Samba, NTP, SMB, DNS, Yum, SSH, Squid, Proxy, Load Balancing, IPTABLES, Bind, Qmail, Sendmail, LVM, Linux Clustering, Samba Server, DNS Server, File Server, DHCP, Group Policy, Linux Hardening, VMWARE, and Multipath Operating Systems: Red Hat Linux, Fedora, Ubuntu Sun Solaris, Win 7, Win 8.1, Win Server 2012, Win-2003 Server & Professional