Operating Systems: Linux (Red Hat Enterprise, Oracle Unbreakable,Ubuntu, SUSE Enterprise), Sun Solaris 10, Microsoft Windows, and Apple Mac OS X. Networking: TCP/IP, UDP, Cisco Basics (IOS, SDM, IP Routing, Managing Internetwork, Configuring the Catalyst Switch, NAT, WAN) Software Management: RPM, DEB, YUM, APT, SMART, ZYPPER, and PKGADD. Databases: Oracle 10g, Oracle Database XE, MySql, Microsoft SQL Server. Software Engineering/Scripting: Bash, Perl, Ruby,Python, HTML, Ruby on Rails, SQL, ASP.NET,SVC, Netbeans, Eclipse, PHP Yii framework, Agile Development. Network Services: NFS, NIS, Apache, Vsftpd, Postfix, DHCP, NTP, SWAT, BIND, Samba, POP3, IMAP, Citadel, Squirrelmail, Autofs, Inetd, CUPS, VNC, SSH, Telnet, Iptables, Red Hat Network Satellite, Red Hat Network Proxy, and Heartbeat High Availability/Load Balancing. Security: OpenVPN (SSL VPN), Snort, Nessus, Acunetix, Microsoft Baseline Security Analyzer, Nikto, and Active Directory basics. Virtual