Technologies
- Programing
- Bash
- C
- HTML
- Javascript
- Lisp
- MySQL
- Perl
- PHP
- Python
- Ruby
- TCL
- System
- DNS servers
- FTP servers: proftpd, pure-ftpd, wuftpd
- Linux distributions: CentOS, Debian, Red Hat
- Mail servers: postfix, qmail, sendmail
- Proxy servers
- Shell scripting
- Version control systems: CVS, RCS, subversion
- Web servers: Apache, Tomcat
- Xen virtualization