Catalogue Search | MBRL
Are you sure you want to remove the book from the shelf?
{{itemTitle}}
77
result(s) for
"FreeBSD."
Sort by:
Implementing the principle of least administrative privilege on operating systems: challenges and perspectives
With the new personal data protection or export control regulations, the principle of least privilege is mandatory and must be applied even for system administrators. This article explores the different approaches implemented by the main operating systems (namely Linux, Windows, FreeBSD, and Solaris) to control the privileges of system administrators in order to enforce the principle of least privilege. We define a set of requirements to manage these privileges properly, striving to balance adherence to the principle of least privilege and usability. We also present a deep analysis of each administrative privilege system based on these requirements and exhibit their benefits and limitations. This evaluation also covers the efficiency of the currently available solutions to assess the difficulty of performing administrative privileges management tasks. Following the results, the article presents the RootAsRole project, which aims to simplify Linux privilege management. We describe the new features introduced by the project and the difficulties we faced. This concrete experience allows us to highlight research challenges.
Journal Article
Active Queue Management in L4S with Asynchronous Advantage Actor-Critic: A FreeBSD Networking Stack Perspective
Bufferbloat is one of the leading causes of high data transmission latency and jitter on the Internet, which severely impacts the performance of low-latency interactive applications such as online streaming, cloud-based gaming/applications, Internet of Things (IoT) applications, voice over IP (VoIP), real-time video conferencing, and so forth. There is currently a pressing need for developing Transmission Control Protocol (TCP) congestion control algorithms and bottleneck queue management schemes that can collaboratively control/reduce end-to-end latency, thus ensuring optimal quality of service (QoS) and quality of experience (QoE) for users. This paper introduces a novel solution by experimentally integrate the low latency, low loss, and scalable throughput (L4S) architecture (specified by the IETF in RFC 9330) in FreeBSD framework with the asynchronous advantage actor-critic (A3C) reinforcement learning algorithm. The first phase involves incorporating a modified dual-queue coupled active queue management (AQM) system for L4S into the FreeBSD networking stack, enhancing queue management and mitigating latency and packet loss. The second phase employs A3C to adjust and fine-tune the system performance dynamically. Finally, we evaluate the proposed solution’s effectiveness through comprehensive experiments, comparing it with traditional AQM-based systems. This paper contributes to the advancement of machine learning (ML) for transport protocol research in the field. The experimental implementation and results presented in this paper are made available through our GitHub repositories.
Journal Article
FreeBSD Device Drivers
FreeBSD Device Drivers is the first and only book to teach readers how to develop device drivers for the FreeBSD operating system.
eBook
Designing BSD Rootkits
Designing BSD Rootkits introduces the fundamentals of programming and developing rootkits under the FreeBSD operating system. In addition to explaining rootkits and rootkit writing, the book aims to inspire readers to explore the FreeBSD kernel and gain a better understanding of the kernel and the FreeBSD operating system itself. Unlike titles on exploit writing or how to gain root access to a system, Designing BSD Rootkits focuses on maintaining root access long after gaining access to a computer. Written in a friendly, accessible style and sprinkled with geek humor and pop culture references, the author favors a \"learn by example\" approach that assumes no prior kernel hacking experience.
eBook
The FreeBSD project: a replication case study of open source development
Case studies can help to validate claims that open source software development produces higher quality software at lower cost than traditional commercial development. One problem inherent in case studies are external validity - we do not know whether or not results from one case study apply to another development project. We gain or lose confidence in case study results when similar case studies are conducted on other projects. This case study of the FreeBSD project, a long-lived open source project, provides further understanding of open source development. The paper details a method for mining repositories and querying project participants to retrieve key process information. The FreeBSD development process is fairly well-defined with proscribed methods for determining developer responsibilities, dealing with enhancements and defects, and managing releases. Compared to the Apache project, FreeBSD uses 1) a smaller set of core developers - developers who control the code base - that implement a smaller percentage of the system, 2) a larger set of top developers to implement 80 percent of the system, and 3) a more well-defined testing process. FreeBSD and Apache have a similar ratio of core developers to people involved in adapting and debugging the system and people who report problems. Both systems have similar defect densities and the developers are also users in both systems.
Journal Article
Performance Evaluation of Multi-Channel Wireless Mesh Networks with Embedded Systems
Many commercial wireless mesh network (WMN) products are available in the marketplace with their own proprietary standards, but interoperability among the different vendors is not possible. Open source communities have their own WMN implementation in accordance with the IEEE 802.11s draft standard, Linux open80211s project and FreeBSD WMN implementation. While some studies have focused on the test bed of WMNs based on the open80211s project, none are based on the FreeBSD. In this paper, we built an embedded system using the FreeBSD WMN implementation that utilizes two channels and evaluated its performance. This implementation allows the legacy system to connect to the WMN independent of the type of platform and distributes the load between the two non-overlapping channels. One channel is used for the backhaul connection and the other one is used to connect to the stations to wireless mesh network. By using the power efficient 802.11 technology, this device can also be used as a gateway for the wireless sensor network (WSN).
Journal Article
How can contributors to open-source communities be trusted? On the assumption, inference, and substitution of trust
Open-source communities that focus on content rely squarely on the contributions of invisible strangers in cyberspace. How do such communities handle the problem of trusting that strangers have good intentions and adequate competence? This question is explored in relation to communities in which such trust is a vital issue: peer production of software (FreeBSD and Mozilla in particular) and encyclopaedia entries (Wikipedia in particular). In the context of open-source software, it is argued that trust was inferred from an underlying ‘hacker ethic’, which already existed. The Wikipedian project, by contrast, had to create an appropriate ethic along the way. In the interim, the assumption simply had to be that potential contributors were trustworthy; they were granted ‘substantial trust’. Subsequently, projects from both communities introduced rules and regulations which partly substituted for the need to perceive contributors as trustworthy. They faced a design choice in the continuum between a high-discretion design (granting a large amount of trust to contributors) and a low-discretion design (leaving only a small amount of trust to contributors). It is found that open-source designs for software and encyclopaedias are likely to converge in the future towards a mid-level of discretion. In such a design the anonymous user is no longer invested with unquestioning trust.
Journal Article
Research on Design of Authentication and Charging System in Mechanical Devices
It was presented how to design a management system under FreeBSD. The system can be used in Mechanical devices to authenticate and charge the client through PPPoE based on RADIUS.And the built-in batch card generation, management functions can help in the number of user connections and bandwidth control,thus to achieve powerful management capabilities and user self-management capabilities.
Journal Article