Network Security
system security Linux network
system security Linux network The romanticized image of the digital nomad – a laptop on a sun-drenched balcony – rarely accounts for the actual friction of maintaining a professional development environment on the move. . The friction is amplified with Linux. We are looking for a setup that respects our kernel configurations, handles volatile network handovers, and maintains a strict security posture without the hand-holding of a consumer-grade OS – so, put simply, more than just a laptop and a sunny deck. The hardware is...
May 26, 2026
Server Securityopen-source Linux administration
open-source Linux administration Cron has existed in Unix and Linux environments for decades, handling backups, cleanup scripts, patching jobs, log rotation, monitoring tasks, and other maintenance work that administrators do not want to run manually. Most Linux servers rely on it constantly, which is exactly why attackers continue abusing it for persistence after a system has already been compromised. . Persistence through cron is not complicated. Attackers do not need a rootkit or advanced malware framework to maintain...
May 25, 2026
Vendors/Productssecurity breach linux
security breach linux A major internal repository breach at GitHub has exposed a critical and overlooked blind spot in Linux supply chain security. Kernel exploits, exposed SSH services, weak firewall rules, and vulnerable daemons dominated the Linux threat model for years, and in many environments, they still matter. But recent supply-chain incidents involving GitHub ecosystems, npm packages, and malicious developer tooling point somewhere else entirely: the developer workstation. . The breach matters because...
May 21, 2026
Security Trends access control multi-tenant
access control multi-tenant Linux administrators often face an ugly choice in the cloud: prioritize convenience and cost-efficiency by sharing infrastructure, or sacrifice those benefits for the sake of total isolation. Most modern Linux workloads don't live on their own private servers anymore. They live in shared environments like Kubernetes clusters, where multiple teams and services run side-by-side. It sounds efficient, and it usually is. . But cloud isolation isn't as ironclad as it looks on the diagram. If you...
May 21, 2026
Vendors/Productsincident response cloud security
incident response cloud security Managed Extended Detection and Response (MXDR) has become one of the most sought-after security services in the enterprise market — and with good reason. It promises the holy grail: broad visibility across endpoints, network, cloud, email, and identity, combined with the 24/7 human expertise most organizations simply cannot build in-house. . However, the rapid growth of the market has produced a wide range of providers whose capabilities vary considerably beneath the surface. Choosing the...
May 19, 2026
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79
kernel patchdata centerperformance boostLinux 6.13 Kernel Patch Enhances Efficiency with Adaptive Polling
In a groundbreaking development, security researchers have introduced a small but mighty tweak to the Linux kernel that promises to cut data center power consumption by up to 30%. This innovative patch, included in the Linux 6.13 release , enhances the network stack with an adaptive polling mechanism, significantly boosting efficiency and throughput without sacrificing security or performance. This isn't just about power savings—it's about smarter, greener computing that optimizes CPU usage and reduces operational costs. . Traditionally, Linux relies on an interrupt-driven approach for handling network data, which, while fair and effective, can be power-intensive. The new adaptive polling method automatically adjusts to network traffic, polling more during heavy loads and reverting to interrupts when traffic is light. This smart handling increases throughput and drastically cuts power usage—ideal for data center applications handling significant network loads. Let's examine how this development significantly advances more efficient and eco-friendly computing without compromising security or performance. Understanding Traditional Networking in Linux To appreciate the impact of this new kernel tweak, it's essential to understand how Linux traditionally handles network data. Historically, the Linux network stack is governed by an interrupt-driven approach. When network data arrives, the system uses interrupts to signal the CPU, prompting it to pause its current tasks and process the incoming data. This robust method ensures fairness, making it suitable for environments where multiple users run jobs simultaneously. However, it's also power-intensive, as the frequent interrupts keep the CPU constantly engaged, consuming significant energy. The Game-Changer: Adaptive Polling The newly introduced kernel patch fundamentally alters this approach by implementing an adaptive polling mechanism. This system intelligently balances polling and interrupting based on the current networktraffic. During periods of high network traffic, the CPU polls the network for new data immediately after processing the last chunk, effectively reducing the need for interrupts. When the traffic subsides, the system reverts to the interrupt-based approach, conserving energy. What makes this patch particularly appealing is its automatic nature. System administrators and users do not need to tweak settings or configure applications to benefit from this new mechanism. The kernel automatically handles the switch between polling and interrupts, optimizing performance and power usage without manual intervention. Boosting Throughput and Cutting Power Usage The benefits of the adaptive polling mechanism are twofold: an increase in throughput and a significant reduction in power consumption. Initial tests have shown that this approach can boost throughput by up to 45% while cutting power usage by as much as 30%. These gains are particularly beneficial for throughput-heavy applications commonly found in data centers, where handling significant network loads efficiently is crucial. The reduction in power consumption stems from the decreased overhead associated with processing frequent interrupts. The system can conserve energy by minimizing unnecessary CPU wake-ups, resulting in substantial savings when scaled across multiple servers in a data center environment. Understanding the Security and Efficiency Implications Integrating this kernel tweak involves more than just updating the kernel—it's about evaluating the broader implications for system security and efficiency. Keeping your system secure while implementing new features is paramount. Therefore, it's essential to ensure that new kernel updates, including this efficiency tweak, do not introduce vulnerabilities or affect real-time data processing in security-sensitive applications. This mechanism's automatic and adaptive nature demands vigilant monitoring to guarantee it operates within the expected parameters and does not inadvertentlycreate security risks. Regular audits, testing, and monitoring tools become crucial in maintaining optimal performance and security. Planning for Implementation Adopting the newly tweaked kernel requires careful planning and systematic updates . Admins should prepare for a phased rollout to kernel 6.13 or higher, testing the impact on performance and security at each stage. This approach helps identify potential issues early and ensures the system remains stable and secure throughout the transition. Moreover, using open-source monitoring tools is vital in tracking power usage and system performance post-implementation. These tools help verify that the expected benefits, such as reduced power consumption and increased throughput, are realized in practice. Admins can continuously monitor and adjust their systems for specific use cases and workloads. Beyond Networking: Encouraging Broader Efficiency Reviews This kernel tweak underscores the importance of continually reviewing and optimizing software stack efficiencies. While the adaptive polling mechanism specifically targets the network stack, it allows for exploring similar optimizations in other system parts. Admins should conduct broader efficiency reviews, potentially uncovering additional areas where performance can be improved and power consumption reduced. The Road Ahead: Adoption and Impact While the immediate benefits of this kernel tweak are evident, widespread adoption might take some time, particularly among enterprise clients who rely on long-term (LTS) releases. These clients often prefer LTS versions for their stability and extended support, meaning they might need to wait for this efficiency tweak to be incorporated into these releases before benefiting from the power savings and performance boost. Nonetheless, including the adaptive polling mechanism in the Linux kernel marks a significant step in optimizing data center operations. It aligns with the broader industry trend towards more sustainable computing practicesand highlights the ongoing innovation within the open-source community. Specific Considerations for AI and HPC Applications It’s important to note that while this kernel tweak offers substantial benefits for general data center applications, its impact on AI and High-Performance Computing (HPC) workloads might be limited. Many AI and HPC applications rely heavily on remote direct memory access (RDMA) to minimize CPU involvement in network data processing, achieving high efficiency. For these applications, the adaptive polling mechanism may not provide the same level of power savings or throughput improvements. However, administrators can still benefit from adopting the new kernel for other workloads and environments where RDMA is not a primary data transfer method. Our Final Thoughts: Embracing Smart, Eco-Friendly Computing The introduction of adaptive polling in the Linux kernel exemplifies how small, thoughtful changes can lead to significant advancements in efficiency and sustainability. This development allows Linux security administrators to enhance data center performance, reduce operational costs, and contribute to more eco-friendly computing practices. By carefully planning the integration of the new kernel and maintaining vigilant monitoring, we can ensure that our systems remain secure while reaping the benefits of increased throughput and reduced power consumption. This kernel tweak is a testament to the power of innovation within the Linux community and a step towards a more efficient and sustainable future for data center operations. . Unveil an innovative kernel update that boosts performance while reducing energy consumption in server farms through dynamic polling.. Linux Kernel Optimization, Data Center Power Savings, Adaptive Polling Mechanism. . Brittany Day
Jan 31, 2025
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Security Projects
67
data centeropen-sourceUDPExploring Google's Transport-Independent PSP Security Protocol and Its Uses
Hearing "open-source", "PSP", and "security" all together got me excited with my initial reaction thinking it was about AMD's Platform Security Processor (PSP) albeit that's not the case here. Google's PSP is the "PSP Security Protocol" and is designed for dealing with cryptographic hardware offloading at data center scale and used by Google already in production. . Google engineers took to designing their own offload-friendly protocol with TLS not being offload-friendly enough and lacking UDP support while also encountering shortcomings of IPsec. PSP as their solution is described as a TLS-like, transport-independent protocol for per-connection security and offload-friendly. The link for this article located at Phoronix is no longer available. . Microsoft introduces a novel lightweight security framework aimed at optimizing encryption hardware performance.. Google PSP, Security Protocol, Cryptographic Offloading. . LinuxSecurity.com Team
May 22, 2022
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Cryptography
81
data centeruser safetyonline securityNordVPN Breach At Third-Party Data Center: Implications For Users
The popular VPN provider, NordVPN, recently announced a server breach at a third-party data center. This breach has led many users to question what the best strategy is for protecting their privacy and security online. Learn about VPNs and how VPN services can better protect their users in a great EFF article: . The popular VPN provider, NordVPN, recently announced a server breach at a third-party data center. NordVPN reassured users that its key services were not impacted by this breach in particular, however, NordVPN users credentials were used with credential stuffing  attacks. NordVPN stresses that there is no indication the breach and the credential stuffing attacks are related. Concerned users can check to see if their credentials were leaked from previous breaches at haveibeenpwned.com. News of the breach has inspired questions around which tool is best for safety and security online. With commercial VPNs  now saturating the market and many people being more concerned with their privacy , itâs important for users to know how VPNs work, and what their limitations are. VPNs can be useful in a userâs safety toolset, but there are some fundamental capabilities that are critical to understand: what VPNs do, what VPNs donât do, and how a VPN service can better protect their users. . The recent event concerning NordVPN at an external data center raises significant worries about online safety and the privacy of users' data. Learn more details. NordVPN Security Breach, VPN User Protection, Online Privacy Limitations. . LinuxSecurity.com Team
Nov 12, 2019
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Privacy
74
DoS attackdata centercyber threatDenial-Of-Service Attacks In Cloud: Impact On Business Operations
An old standby of cyber criminals--the denial-of-service attack--has become a new worry for data center operators. As companies increasingly use virtualized data centers and cloud services, new weaknesses have opened up in enterprise infrastructure. . At the same time, denial-of-service attacks are moving from brute-force floods of data to more skillful attacks on application infrastructure. The combination is increasingly threatening for the companies that are placing critical business data outside their facilities, leaving their business reliant on continuing communications. In addition, with multi-tenant services becoming more common, attacks aimed at one company could dramatically impact the services of an unrelated, but co-located, firm. "Enterprises continue to cite security and availability as the top barrier to adoption of cloud computing," Rob Ayoub, Global Program Director for Information Security research at Frost & Sullivan said in a statement. "Given these concerns, hosting and other data center operators today must have the ability to mitigate attacks without interrupting customer facing services." The link for this article located at IT World / CIO is no longer available. . Grasping the evolution of distributed-denial-of-service threats in cloud settings and their implications for corporate activities.. Denial Of Service, Cloud Security, Multi-Tenant Services, Cyber Threats, Data Center Management. . Alex
Nov 03, 2010
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Network Security
79
access controlintrusion preventiondata center19 Methods To Protect Your Data Center From Physical Intrusions
If a picture's worth 1,000 words, these illustration and diagrams have a lot to say about security. A dozen interesting and illuminating looks at data center security, image spam, forts and castles, and much more from CSO's archives.. 19 ways to physically secure your data center Mantraps, access control systems, bollards and surveillance. Your guide to securing the data center against physical threats and intrusions. The link for this article located at CSO Online is no longer available. . Implement stringent data center security by enforcing perimeter control, access systems, and continuous monitoring to mitigate unauthorized entry and threats. Data Center Security, Intrusion Prevention, Physical Protection. . LinuxSecurity.com Team
Oct 28, 2010
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Security Projects
81
data centersecurity technologyintrusion protectionAdapting Intrusion Protection Systems to Virtual Environments
Intrusion protection system (IPS) technology is gradually adapting to virtual computing, as IPS vendors add to their product lines actual virtual IPSes as well as IPSes that protect virtual machines. Sourcefire's recent release of VMware-based virtual appliances was the latest arrival to the market of IPSes that work with virtual machines. IBM ISS also offers a virtual IPS, and TippingPoint has plans to roll out a virtual IPS offering as well.. What's driving the IPS to virtualization? A combination of trends in IPS evolution, including the convergence of IPS technology with other security functions (think firewalls and data leakage protection), the consolidation of data centers using virtualization technology, and compliance. It's not so much that the IPS is changing in what it can do technology-wise, but more that it's changing in the type of environment it runs in, notes Matt Watchinski, senior director of Sourcefire's Vulnerability Research Team. "Most [IPS vendors] are making their software work in those [virtual] environments," he says. "The point is that we're taking that step forward to embracing virtualization." Virtual IPSes are still a fairly new approach for IPS perimeter defenses. "The virtualization of these security appliances starts small, and most people are still dipping their toes in the water," Watchinski says. "You're not going to see massive deployments here [for now]." The link for this article located at Dark Reading is no longer available. . Intrusion protection systems (IPS) are evolving to meet the demands of virtualization and complex IT environments, ensuring robust security for virtual assets.. Intrusion Prevention System, Virtual IPS, Security Technology. . LinuxSecurity.com Team
Dec 08, 2009
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Privacy
82
data centernational securityNSANSA Launches $1.5 Billion Cybersecurity Center in Utah for Enhanced Tech
The National Security Agency (NSA) is setting up a new $1.5 billion cybersecurity data center at the Utah National Guard's Camp Williams near Salt Lake City. The 1-million-square foot center will form the hub of the highly-classified Comprehensive National Cybersecurity Initiative (CNCI) launched during the Bush Administration. . It is not clear, though, whether that is the only purpose that the new data center will serve, or whether it will support other NSA cybersecurity activities. News of the planned center was announced on Friday by Glenn Gaffney, NSA's deputy director of national intelligence for collection, during an address to lawmakers at the Utah state capitol. Joining him at the announcement were Utah Governor Gary Herbert and Sens. Orrin Hatch, (R-Utah), and Bob Bennett, (R-Utah). The link for this article located at CIO Magazine is no longer available. . The new $1.5 billion cybersecurity hub established by the NSA in Utah is set to encompass various roles in addition to its main objectives.. NSACybersecurityCenter, DataCenterDevelopment, NationalSecurityInitiatives. . Anthony Pell
Oct 27, 2009
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Government
77
intrusion detectionnetwork protectiondata centerVirtualization Security: Addressing Monitoring Challenges in Data Centers
Deployment of products that transform physical servers into "virtual machines" has resulted in nothing short of a data centre revolution. But virtualization of everything from operating systems to applications increasingly has critics asking: Where's the security? "Traffic is going from virtual machine to virtual machine," points out Neil MacDonald, vice president of research firm Gartner. "Where's the monitoring, the intrusion-detection and protection?" . MacDonald says that only a handful of security vendors -- Blue Lane Technologies, Reflex Security and StillSecure among them -- have adapted the capabilities of their appliances to work as software-based shields in virtualization software from vendors that include VMware, XenSource and Virtual Iron. The traditional security industry has been largely oblivious to the radical changes wrought by virtualization, which is fast moving from development to production environments, says Andreas Antonopoulos, senior vice president and founding partner at Nemertes Research. . Virtualization transforms data center operations with flexibility and efficiency, but it also introduces security challenges that demand robust monitoring strategies. Data Center Security, Virtualization Challenges, Network Protection. . LinuxSecurity.com Team
Apr 27, 2007
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Server Security
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