- * **Systems administration**: XEN, KVM, Puppet, Nagios, Munin
- * **Server software**: BIND, Exim, Qmail, Postfix, Apache, MySQL, PostgreSQL, Asterisk, Mediawiki, Drupal
- * **Networking**: TCP/IP, IPv6, DNSSEC, BGP routing
+ * **Sysadmin**: KVM, XEN, Docker, Puppet, systemd, Nagios, Munin
+ * **Server software**: BIND, Exim, Qmail, Postfix, Apache, MySQL, PostgreSQL, Mediawiki, Asterisk
+ * **Networking**: TCP/IP, HTTP(S), IPv6, DNSSEC, BGP routing