A firewall is an essential network security component. The firewall rule base, the list of filters
to be applied on network traffic, can have significant evolvability issues in a context where …

Normalized Systems (NS) theory describes how to design and develop evolvable systems. It
is applied in practice to generate enterprise information systems using NS Expanders from …

Normalized Systems (NS) enables sustainable software development and maintenance
using code generation of evolvable information systems from models of so-called NS …

Inheritance as a relation for expressing generalisations and specialisations or taxonomies is
natural for conceptual modelling, but causes evolvability problems in software …

The TCP/IP based firewall is a notorious non-evolvable system. Changes to the firewall often
result in unforeseen side effects, resulting in the unavailability of network resources. The root …

Inheritance as a relation for expressing generalisations and specialisations or taxonomies is
natural for human perception and essential for conceptual modelling. However, it causes …