Kostis Netzwerkberatung is specialized on networks, especially

Kostis Netzwerkberatung customers generally have complex, heterogeneous networks consisting of (alphabetical order):

Also:

For IP address administration and automated creation of consistent data for DNS/bind (named) and DHCP (dhcpd), Kostis Netzwerkberatung wrote a web base open source application: netdb.
netdb is running at a number of my customer sites at no license cost under Linux and HP UX. It also runs fine under FreeBSD.

Kostis Netzwerkberatung customers range from public administration, non-profit organizations, banks, insurance companies, IT outsourcing to automotive industry (truck manufacturers) and telecommunication industry located in the following western European countries: Austria, Belgium, Denmark, France, Germany, Great Britain, Netherlands, Spain and Switzerland.