Sustainability And Customer Satisfaction


Graded protection, effectively implemented

Security and Cloud Computing

Business activity without internet connection? Hardly imaginable today! This makes it all the more important to plan exactly how to communicate with the Internet. All customers have and had a need for the planning and implementation of a suitable solution.

Firewalls with clean configuration, cascading of Internet access (web proxy, packet inspection), centralization of email gateways with malware filters and effective spam protection and VPN connections have been the daily topics for years. The statistics and the high availability of the supported customer systems show that the solutions I have implemented are working.

The partial outsourcing of services and hardware to specialized service providers (cloud computing in a very general reading) adds new requirements. The systems have to be integrated into the own network with high performance, but at the same time they have to be isolated from the outside world.

Structural Adjustment

More Or Less Complexity?

Equally important in consolidation is the reduction of protocols, interfaces, gateways and interdependence between systems. Especially with the increasing number of services in the network, it is important to keep the protocols in control in the LAN and to identify and reduce competitively redundant communication channels.

In many networks there is also a need for consolidation in communication with the Internet in order to minimize security risks and protocol difficulties. The meaningful integration of email servers and security appliances is a constant source of functional problems if standards and concepts are not properly adhered to. Asystec IT Consulting is in charge of this area of IT architecture for several customers.

The rapid development of new services on the Internet, for its part, is causing increasing complexity. Multimedia services (via multicast), voice data integration and the introduction of IPv6 are currently leading to great challenges for every IT manager.


Productive Virtualization Since 2004

The consolidation of IT systems often means packing more services on less hardware. This works elegantly by virtualizing previously independent servers. This allows functional units and a mix of operating systems to be combined under one roof. If the hardware is high-quality and equipped with remote management, the hypervisor offers advantages on bare hardware: All productive services are virtualized and can easily be migrated from one system to another.

The first productive virtualization according to my concept has been in daily use since 2004. Further stable systems under VMware were added and are supported by me today.

Network Design With QoS

Quality Of Service In Converging Networks

WAN planning is an important factor in an international corporation with several locations. asystec played a key role in planning and implementing a customer's cross-location network with well over 100 locations. Routers were configured in conjunction with providers. The consistent prioritization of data traffic over mostly narrow-band lines was very important here. Together with other service providers, I developed rules for correctly transferring of prioritized data streams between switches in the LAN via traffic shaping appliances to the WAN provider and developed load simulations for various WAN transport paths.

Multimedia or runtime-critical applications in (W)LAN are a particular challenge. Here the wheat separates quickly from the chaff when networks come under load. Since 2004, all supported networks have been functionally segmented via VLANs and prioritized uniformly and consistently on OSI layer 2/3 wherever the respective hardware supported it. In the course of this configuration work, a considerable amount of know-how has accumulated with devices from various manufacturers.

Since 1994, the integration of voice services into the Internet has been a particular hobbyhorse: With stages on voice interactive systems and the first VoIP applications, the topic really got going from 2003, when VoIP services became widely available. Several integrated telephone applications are now in use, with central provisioning from the company network and provider connections for telephony and Internet in several countries.


My activities range from small, local companies to globally active corporations. Despite all the differences, every company needs external support from time to time to cope with special tasks. All my clients could count on my serious, concentrated and goal-oriented work.

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