In this thesis on Firewall Architectures for Multimedia Applications solutions are developed and discussed that enable the usage of multimedia applications in network environments where firewalls are employed. The provided solutions cover optimizations of existing firewall architectures as well as the development of new mechanisms to implement firewall architectures. Within a global networked e...

The bandwidth of network traffic has also increased significantly along with the growth of the Internet bandwidth. Network-intensive application systems, such as web server and realtime streaming server, etc, must be capable of filtering malicious packets in a high traffic environment. However, firewall functions and network applications share common CPU resources for server equipping software-...

The aim of the research is to investigate techniques that support the development of highly dependable applications in a distributed system environment. Techniques developed include redundant task allocation, load balancing, fault-tolerant computing, and communication. The application the authors have implemented in the system is a firewall application. The firewall runs in redundant mode. Each...

Firewalls are a well-established security mechanism to restrict the traffic exchanged between networks to a certain subset of users and applications. In order to cope with new application types like multimedia applications, new firewall architectures are necessary. The performance of these new architectures is a critical factor because Quality of Service (QoS) demands of multimedia applications...

This paper explores the firewall security and performance relationship for distributed systems. Experiments are conducted to set firewall security into seven different levels and to quantify their performance impacts. These firewall security levels are formulated, designed, implemented, and tested phase by phase under an experimental environment in which all performed tests are evaluated and co...

The paper that is being submitted deals primarily with the implementation of firewall technology on Linux based systems. It focuses on the features of the visual medium for the creation and management of firewall rules, Visual Firewall Rule Builder – VFRB. VFRB has been written in Java and has a modular construction. The program consists of an object-oriented graphical user interface and a poli...

A firewall is a security guard placed at the point of entry between a private network and the outside Internet such that all incoming and outgoing packets have to pass through it. The function of a firewall is to examine every incoming or outgoing packet and decide whether to accept or discard it. This function is conventionally specified by a sequence of rules, where rules often conflict. To r...

A firewall is a security guard placed at the point of entry between a private network and the outside Internet such that all incoming and outgoing packets have to pass through it. The function of a firewall is to examine every incoming or outgoing packet and decide whether to accept or discard it. This function is conventionally specified by a sequence of rules, where rules often conflict. To r...