Network security/monitoring tools (iptables firewall, tcpdump, Nagios/Uptime/OpenNMS monitoring, nessus vulnerability scanning, nmap host discovery, Ossec HIDS, denyhosts)
ISC's DHCP/BIND DNS & dnsmasq
Collaboration server using open-exchange/LDAP/Postgres and integrating openfire.
Collaboration server iRedmail from Google codes having technologies postfix, ldap, mlapd, clamav, spamassassin, pure-ftp, SOGO, and ejabberd.
Open source product backuppc to take full/incremental backup.
Experience on Parallels Business Automation.
Web Servers software - Apache1.3-2.x & nginx 0.6-0.8.45, Tomcat 5/6, Varnish 1-2.0, some Lighttpd 1.4/1.5 and Cherokee v .99+ server setup and administration
Experience using cloud providers & API's for Amazon (AWS) with Rackspace Cloud/Cloud Files, Linode, Slicehost, CloudSigma (EU) and IBM Cloud environments.
Programming Languages
Bash - Intermediate level
Awk/Sed - Novice level
Perl - Novice level
Webhosting Control Panel’s
WHM/Cpanel
Plesk 8.– 11
Hostbill