* Practical knowledge of the OS (Linux, BSD, Windows),
* Practical knowledge of the application servers like (Apache, Nginx, Tomcat, SharePoint 2007/ProjectServer , MS IIS, Jboss),
* Practical knowledge of the services/protocols : (FTP, SSH, SMTP, DNS, HTTP/HTTPS, POP3/IMAP, MySQL) - based on the popular major open solutions,
* Practical knowledge of the monitoring solutions like : (BigBrother, Hobbit, ZABBIX, based on RRTOOL)
* Practical knowledge of the web admin panels out of the box (WHM/cPanel, Ajenti, Webmin, etc)
* Good knowledge of TCP/IP including LAN/WAN,
* Cluster environmets for the web applications (HaProxy, Tomcat, Varnish, Squid)
Over 10 years in IT ;-)