Over 30 years experience in all forms of Unix and now Linux. All the networking buzz words protocols and including VLANs and subnets Security and Firewall setup and maintenance. Prefer RedHat, CentOS, and Oracle Linux as server environments, Ubuntu is also a nice choice. High availability/Redundancy, including disaster recovery Backup and restore VMware, ESX, ESXi, vSphere SAN Switches and routers, including load balancing switches/routers VPNs Excellent troubleshooting Excellent shell scripting (if I do it more than once I start moving it to an automated script Kickstart, SpaceWalk, Nagios, Munin, NetDisco, Cacti Administration work on Window servers, even integrating AD and LDAP Trouble shooting work workstations running windows VoIP