I offer project- or time-based Linux, Security and Open Source engineering and consulting.


My expertise includes

  • UNIX/Linux systems (Debian, Ubuntu, SLES, RHEL, OpenBSD)
  • Large scale system and network design
  • System and network management, automatisation (Red Hat Satellite, Foreman, Puppet, ..)
  • System and network security/hardening
  • Firewall engineering and management
  • Intrusion detection and prevention (Suricata, Snort, Passivedns, ..)
  • High- and low-interaction honeypots
  • Disk- and memory-forensic
  • Large scale system logging and monitoring (Splunk, Logstash)
  • Web- and mailhosting environments (Apache 2.4, Nginx, Postfix, Dovecot)
  • High availability, redundancy and load sharing
  • Proxy- and Reverse-Proxy Systems (Apache, squid, Bluecoat, ..)
  • Database engines (mysql, mariadb, postgreSQL)
  • Server virtualisation and containerisation (RHEV, KVM, Atomic Host, Docker)
  • NAC – Network Access Control for LAN and WLAN (PacketFence)

Consulting and secure hosting!