Abstract Currently, in most software environments, the fundamental tool used by software maintainers to perform system maintenance is the integrated development environment (IDE). The problem with current IDEs is that they have poor usability and offer little design information to the user; this increases the time necessary to perform program comprehension activities. In addition, many systems being maintained are accompanied by poor, if any, design documentation. This, in turn, increases the time...

Abstract Since the advent of computer data networking, large and small business corporations, the banking industry, government, and military organizations, and today even the personal home computer user have all raised the concern for network security. Extensive research and development efforts have been exerted to develop sophisticated firewall and intrusion detection technologies. Most of these technologies are designed to monitor the gateways of local networks to the public Internet....