Networking: Cisco switches and routers, CiscoWorks, Cisco ACS, Virtual Private Networks (VPN), Wireless Networking, WAN Optimization, Load Balancers, and Brocade fibre channel switches. Operating Systems: Windows (2008/2003/XP), Unix (Solaris, HP-UX, SCO), and Linux (Redhat, Centos, Ubuntu). Security: Firewalls (Cyberguard, Lucent, Cisco, Juniper), Intrusion Detection/Prevention Sensors (ISS RealSecure/Site Protector, Cisco IDS), Enterprise Security Management Software, Network Scanners. Data Storage Systems: EMC (Clariion, Celerra) Data Backup and Recovery: Symantec Ghost, Veritas Backup Exec, Netvault