UtahFS: Encrypted File Storage

UtahFS: Encrypted File Storage

Encryption is one of the most powerful technologies that everyone uses on a daily basis without realizing it. Transport-layer encryption, which protects data as it’s sent across the Internet to its intended destination, is now ubiquitous because it’s a fundamental tool for creating a trustworthy Internet. Disk encryption, which protects data while it’s sitting idly on your phone or laptop’s hard drive, is also becoming ubiquitous because it prevents anybody who steals your device from also being able to see what’s on your desktop or read your email.

The next improvement on this technology that’s starting to gain popularity is end-to-end encryption, which refers to a system where only the end-users are able to access their data -- not any intermediate service providers. Some of the most popular examples of this type of encryption are chat apps like WhatsApp and Signal. End-to-end encryption significantly reduces the likelihood of a user’s data being maliciously stolen from, or otherwise mishandled by a service provider. This is because even if the service provider loses the data, nobody will have the keys to decrypt it!

Several months ago, I realized that I had a lot of sensitive files on my computer (my diary, if Continue reading

Cloud Networking Architectures

There’s one thing no cloud vendor ever managed to change: virtual machines running on top of cloud infrastructure expect to have Ethernet interfaces.

It doesn’t matter if the virtual Ethernet Network Interface Cards (NICs) are implemented with software emulation of actual hardware (VMware emulated the ancient Novell NE1000 NIC) or with paravirtual drivers - the virtual machines expect to send and receive Ethernet frames. What happens beyond the Ethernet NIC depends on the cloud implementation details.

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Real-Time Monitoring Critical to Service Assurance

As service providers adopt virtualization and SDN capabilities, they are being held back by...

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Review: Magic Mouse 2 and Magic Trackpad 2 on Fedora

I recently purchased a new Apple Magic Mouse 2 and an Apple Magic Trackpad 2—not to use with my MacBook Pro, but to use with my Fedora-powered laptop (a Lenovo 5th generation ThinkPad X1 Carbon; see my review). I know it seems odd to buy Apple accessories for a non-Apple laptop, and in this post I’d like to talk about why I bought these items as well as provide some (relatively early) feedback on how well they work with Fedora.

The Justification/Background

First, let me talk about the why behind my purchase of these items. Several years ago, I started simultaneously using both an external trackpad/touchpad and an external mouse with my macOS-based home office setup. I realize this is probably odd, but I adopted the practice as a way of eliminating “mouse finger” on my right hand. With this arrangement, I stopped trying to scroll with my right-hand (either using a mouse wheel with older mice or using the scroll-enabled back of the Magic Mouse), and instead shifting scrolling to my left hand (using two-finger scrolling on the trackpad). This “division of labor” worked well. Because my existing Magic Mouse and Magic Trackpad—both earlier generations—don’t work with Continue reading

Daily Roundup: AT&T First to Activate DSS

AT&T activated the first US dynamic spectrum sharing deployment; Ericsson burned cash on China...

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Ansible Automates 2020

Today, the operational role of IT is obvious. The rapid developments enabled by automation create genuine business value. The results that can be achieved by automation have a direct link to a company’s business goals. 

As a CTO or CIO, sometimes you need help articulating this to stakeholders. Translating IT departments’ performance into business prioritized KPIs. Most see efficiency gains, cost and risk reductions, for example. Automation is clearly an executive-level issue.

At first, Ansible was a classical tool that was  utilized for specific automation. Ansible helps your team automate routine tasks, so that they can instead focus on what you want to do. The platform enables you to structure work by automating your processes.

 

Automation is a journey - start yours at Ansible Automates 2020

The global, all-day digital event – Ansible Automates 2020 – takes place on June 10. The event provides inspiration as to how the automation journey can be accelerated and taken to the next level. And no, we’re not going to discuss functionality and technology all day. We want to highlight the cultural and behavioral changes that are linked to the trend towards greater automation. 

For organizations to achieve the best results, Continue reading

IoT takes aim at social distancing

As many part of the U.S. are at least partially lifting lockdown sanctions prompted by the COVID pandemic, questions about the safety of those moves remain. IoT technology, however, might help alleviate some of those concerns.The degree to which it’s safe to reopen certain workspaces hinges in large part on how strictly social distancing practices are followed, and IoT technology may have a role to play. Companies like Genetec, a building management and security firm, are rolling out products designed to help businesses manage their facilities during the pandemic.To read this article in full, please click here

Cumulus content roundup: May 2020

May means more content! There was a very exciting announcement from us this month, and if you missed it don’t worry, you can read all about it below. In addition, we were keeping very busy with fresh podcast episodes, informative blog posts and much more. Ready to dive into all things open networking? Get comfortable and let’s dive in.

From Cumulus Networks

UCMP: Augmenting L3 only designs: So what makes a purely L3 design so aspirational? Can a UCMP increase efficiency? Read this blog post by Rama Dharba as he addresses these questions and more. He delves into the challenges surrounding this type of design, possible solutions and a recent augmentation in Cumulus Linux 4.1 that increases the design’s ability for flexibility.

Kernel of Truth season 3 episode 6: Building modern campus networks: Let’s talk about all things modern campus networks. In this new Kernel of Truth episode, Brain O’Sullivan, Roopa Prabhu, Eric Pulvino and David Marshall dive into trends, technologies, architecture and much more. Grab your headphones and get ready to hear first-hand experiences from building these networks as well as tips and tricks learned along the way.

Build an OpenStack/ Ceph cluster with Cumulus Networks in Continue reading

Quit Manspreading. Tech Needs Women More Than Ever

Companies can kiss their dream of a future dominated by smart machines goodbye unless they start...

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Is QUIC really Quicker?

QUIC is a relatively new data transport protocol developed by Google, and currently in line to become the default transport for the upcoming HTTP standard. Because of this, it behooves every network engineer to understand a little about this protocol, how it operates, and what impact it will have on the network. We did record a History of Networking episode on QUIC, if you want some background.

In a recent Communications of the ACM article, a group of researchers (Kakhi et al.) used a modified implementation of QUIC to measure its performance under different network conditions, directly comparing it to TCPs performance under the same conditions. Since the current implementations of QUIC use the same congestion control as TCP—Cubic—the only differences in performance should be code tuning in estimating the round-trip timer (RTT) for congestion control, QUIC’s ability to form a session in a single RTT, and QUIC’s ability to carry multiple streams in a single connection. The researchers asked two questions in this paper: how does QUIC interact with TCP flows on the same network, and does UIC perform better than TCP in all situations, or only some?

To answer the first question, the authors tried running QUIC Continue reading

Ericsson Burns Cash to Gain China 5G Deals

The vendor's business in China has grown as of late, having inked contracts with the country’s...

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Chef Dishes Compliance, Desktop Automation

The updates follow a move by Chef last year to revamp its development, platforms, and go-to-market...

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Large flow marking using BGP Flowspec

Elephant Detection in Virtual Switches & Mitigation in Hardware discusses a VMware and Cumulus demonstration, Elephants and Mice, in which the virtual switch on a host detects and marks large "Elephant" flows and the hardware switch enforces priority queueing to prevent Elephant flows from adversely affecting latency of small "Mice" flows.

SDN and WAN optimization describes a presentation by Amin Vahdat describing Google's SDN based wide area network traffic engineering solution in which traffic prioritization allows Google to reduce costs by fully utilizing WAN bandwidth.

Deconstructing Datacenter Packet Transport describes how priority marking of packets associated with large flows can improve completion times for flows crossing the data center fabric. Simulation results presented in the paper show that prioritization of short flows over large flows can significantly improve throughput (reducing flow completion times by a factor of 5 or more at high loads).

This article demonstrates a self contained real-time Elephant flow marking solution that leverages the real-time visibility and control features available using commodity switch hardware.

The diagram shows the elements of the solution. An instance of the sFlow-RT real-time analytics engine receives streaming sFlow telemetry from a pair of edge routers. A mix of many small flows mixed Continue reading

Tech Bytes: Payomatic Cuts Costs, Revamps WAN With Fortinet Secure SD-WAN (Sponsored)

Today’s Tech Bytes episode, sponsored by Fortinet, explores an SD-WAN deployment with PAYOMATIC, a lending company in NYC. We talk about how PAYOMATIC cut costs by migrating off MPLS, and how Fortinet Secure SD-WAN positioned the company to take advantage of new infrastructure options. Our guest is Michael Saraceno, CISO and VP of IT at PAYOMATIC.

The post Tech Bytes: Payomatic Cuts Costs, Revamps WAN With Fortinet Secure SD-WAN (Sponsored) appeared first on Packet Pushers.

Making the Most of Our MANRS Partnerships – NIC.br and Brazil Lead the MANRS Pack

Read this blog in Portuguese

Improving the state of routing security is no small task. It requires network operators, IXPs, and CDN and cloud providers of all sizes across the globe to work together, improve their own networks, and open lines of communications with both their friends and competitors to make a real difference.

One of the ways we’ve been able to spread the MANRS message so far and wide is through partnerships. We’re lucky to have dedicated, strong partners in several regions of the world. In this post, we’ll talk about one partnership in particular – NIC.br – and how their efforts have changed the landscape for routing security in Brazil and beyond.

A Little History

NIC.br is responsible for the administrative and operational functions related to the .br (Brazil) domain. In addition, NIC.br goes beyond similar entities in other countries, investing in actions and projects that bring a series of benefits to the improvement of activities related to the available Internet infrastructure in Brazil.

In 2017, NIC.br hosted a Safer Internet Program, which the Internet Society supported. NIC.br invited Andrei Robachevsky to speak on a fairly new initiative called MANRS addressing routing security as Continue reading

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