In mobile wireless environments, personal digital assistants may cache data to work even when the mobile client is far from the structured network. However, the same cached data may be shared by two or more users and this can be done in an ad-hoc wireless network. In this case, it is necessary to have always the most updated data. To solve this problem, we developed a software that share data b...

This paper presents the architecture and the preliminary evaluation of a request routing DNS server that decouples server selection from the rest of DNS functionality. Our DNS server, which we refer to as MyXDNS, exposes well-defined APIs for uploading an externally computed server selection policy and for interacting with an external network proximity service. With MyXDNS, researchers can expl...

Large buildings, sprawling campuses and multiple remote sites have led to an explosion in the number of IP networks for corporate computing. Workgroups are spread over multiple networks. Servers are configured with multiple network interfaces in an attempt to optimize access. When geographic or capacity issues arise, separate servers which replicate desired functionality are placed in network p...

Server virtualization has brought about tremendous value to a modern computing landscape and in particular to data center and cloud infrastructures. Virtual server deployments have become ubiquitous in many development and production sites, in cloud infrastructures and in disaster recovery solutions. Network connectivity is a vital aspect of modern computing. In this work we explore the new req...

This paper addresses the subject of improving performance of a client / server ad hoc network system suffering from high resource contention by improving its packet delivery fraction. In previous work authors gave a solution to reduce the possibility of bottleneck occurrences for such a system, which main idea is to decouple route-requesting from serviceproviding activities, and try to reduce t...

Following advances in network technologies, an increasing number of systems have been provided to help network users via the Internet. In order to authenticate the remote users, password-based security mechanisms have been widely used. They are easily implemented, but these mechanisms must store a verification table in the server. If an attacker steals the verification table from the server, th...

Private access to corporate servers from Internet can be achieved using various security mechanisms. This article presents a network access control mechanism that employs a policy management architecture empowered with dynamic firewalls. With the existence of such an architecture, system and/or network administrators do not need to reconfigure firewalls when there is a location change in user s...

Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. 1. Abstract This document describes how proxy chaining and policy implementation can be supported in roaming systems. The mechanisms described in this document are in current use. However, as noted in the security considerat...

Network attached storage system is proposed to solve the bottleneck problem of the multimedia server. It adds a network channel to the RAID and data can be transferred between the Net-RAID and clients directly. The architecture avoids expensive store-and-forward data copying between the multimedia server and storage devices when clients download/upload data from/to the server. The system perfor...

Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. 1. Abstract This document describes how proxy chaining and policy implementation can be supported in roaming systems. The mechanisms described in this document are in current use. However, as noted in the security considerat...