Archive

Category Archives for "Networking"

5 Reasons Why Attending the Transform Security Track at vForum Online is a Must

If you’ve been working in IT for the past few years, you know how much the security landscape has changed recently. Application infrastructures — once hosted in on-premises data centers — now sit in highly dynamic public and private multicloud environments. With the rise of mobile devices, bring-your-own-device (BYOD) policies, and Internet of Things (IoT), end-user environments are no longer primarily about corporately managed desktops. And attackers are growing more sophisticated by the day.

In such an atmosphere, traditional network perimeter security ceases to provide adequate protection.

That’s where the VMware solutions come in. At the heart of the solutions is a ubiquitous software layer across application infrastructure and endpoints that’s independent of the underlying physical infrastructure or location. To really understand how it works, you need to experience it for yourself. And the Transform Security track at vForum Online Fall 2017 on October 18th is the perfect opportunity. As our largest virtual conference, vForum Online gives IT professionals like yourself the chance to take a deep dive into VMware products with breakout sessions, chats with experts, and hands-on labs — all from the comfort of your own desk.

With this free half-day event just weeks away, it’s time to Continue reading

Familiarizing Africans with Internet of Things

About 70 years ago, the world was introduced to the digital computers revolution which made the computation of millions of operations as fast and easy as 1+2. This simplified so many time-consuming activities and brought about new applications that amazed the world. Then, about 40 years ago the advent of networks and inter-networks (or the Internet) revolutionized the way we work and live by connecting the hundreds of millions of computing devices that have invaded our homes and offices.

Today, we are at the beginning of a new revolution, that of the Internet of Things (IoT), the extent of which might only be limited by our imagination. Internet of Things refers to the rapidly growing network of objects connected through the Internet. The objects can be sensors such as a thermostat or a speed meter, or actuators that open a valve or that turn on/off a light or a motor. These devices are embedded in our everyday home and workplace equipment (refrigerators, machines, cars, road infrastructure, etc.) or even the human body. These devices connected to powerful computers in the “cloud” might change our world in a way that few of us can imagine today. It is estimated that Continue reading

Response: The Worm Has Turned Against Tech Companies

For the past decade, the loudest arguments waged regarding the Four (Amazon, Apple, Facebook, and Google) were about which CEO was more Jesus-like or should run for president. These platforms brought down autocrats, were going to cure death and put a man on Mars, because they are just so awesome. Media outlets were coopted into […]

The post Response: The Worm Has Turned Against Tech Companies appeared first on EtherealMind.

Hitachi reorganizes to focus on IoT

In yet another sign of how the Internet of Things (IoT) is re-arranging the international corporate landscape, Japanese manufacturing giant Hitachi is reorganizing to challenge the global leaders in the IoT market. The conglomerate is combining three of its Bay Area divisions into a single $4 billion unit responsible for growing Hitachi's IoT operations in more than 130 countries.The new IoT-centric operation will combine Hitachi Data Systems (data center infrastructure), Hitachi Insight Group (big data software) and Pentaho (analytics) into a wholly owned subsidiary called Hitachi Vantara, which will employ some 7,000 people (about a of third of Hitachi’s IT workforce) out of its Santa Clara, California, headquarters.To read this article in full or to leave a comment, please click here

Getting Linux to ignore pings

The ping command sends one or more requests to a system asking for a response. It's typically used to check that a system is up and running, verify an IP address, or prove that the sending system can reach the remote one (i.e., verify the route).The ping command is also one that network intruders often use as a first step in identifying systems on a network that they might next want to attack. In this post, we're going to take a quick look at how ping works and then examine options for configuring systems to ignore these requests.How ping works The name "ping" came about because the ping command works in a way that is similar to sonar echo-location, which used sound propogation for navigation. The sound pulses were called "pings." The ping command on Unix and other systems sends an ICMP ECHO_REQUEST to a specified computer, which is then expected to send an ECHO_REPLY. The requests and replies are very small packets.To read this article in full or to leave a comment, please click here

Handling A10 PCAP Files Using Automator in MacOS

I’m not a big user of Apple’s Automator tool, but sometimes it’s very useful. For example, A10 Networks load balancers make it pretty easy for administrators to capture packets without having to remember the syntax and appropriate command flags for a tcpdump command in the shell. Downloading the .pcap file is pretty easy too (especially using the web interface), but what gets downloaded is not just a single file; instead, it’s a gzip file containing a tar file which in turn contains (for the hardware I use) seventeen packet capture files. In this post I’ll explain what these files are, why it’s annoying, and how I work around this in MacOS.

A10 Logo

Sixteen Candles

If you’re wondering how one packet capture turned into sixteen PCAP files, that’s perfectly reasonable and the answer is simple in its own way. The hardware I use has sixteen CPU cores, fifteen of which are used by default to process traffic, and inbound flows are spread across those cores. Thus when taking a packet capture, the system actually requests each core to dump the flows matching the filter specification. Each core effectively has awareness of both the client and server sides of any connection, so both Continue reading

Geo Key Manager: How It Works

Today we announced Geo Key Manager, a feature that gives customers unprecedented control over where their private keys are stored when uploaded to Cloudflare. This feature builds on a previous Cloudflare innovation called Keyless SSL and a novel cryptographic access control mechanism based on both identity-based encryption and broadcast encryption. In this post we’ll explain the technical details of this feature, the first of its kind in the industry, and how Cloudflare leveraged its existing network and technologies to build it.

Keys in different area codes

Cloudflare launched Keyless SSL three years ago to wide acclaim. With Keyless SSL, customers are able to take advantage of the full benefits of Cloudflare’s network while keeping their HTTPS private keys inside their own infrastructure. Keyless SSL has been popular with customers in industries with regulations around the control of access to private keys, such as the financial industry. Keyless SSL adoption has been slower outside these regulated industries, partly because it requires customers to run custom software (the key server) inside their infrastructure.

Standard Configuration

Standard Configuration

Keyless SSL

Keyless SSL

One of the motivating use cases for Keyless SSL was the expectation that customers may not trust a third party like Cloudflare with their Continue reading

Introducing the Cloudflare Geo Key Manager

Introducing the Cloudflare Geo Key Manager

Introducing the Cloudflare Geo Key Manager

Cloudflare’s customers recognize that they need to protect the confidentiality and integrity of communications with their web visitors. The widely accepted solution to this problem is to use the SSL/TLS protocol to establish an encrypted HTTPS session, over which secure requests can then be sent. Eavesdropping is protected against as only those who have access to the “private key” can legitimately identify themselves to browsers and decrypt encrypted requests.

Today, more than half of all traffic on the web uses HTTPS—but this was not always the case. In the early days of SSL, the protocol was viewed as slow as each encrypted request required two round trips between the user’s browser and web server. Companies like Cloudflare solved this problem by putting web servers close to end users and utilizing session resumption to eliminate those round trips for all but the very first request.

Expanding footprint meets geopolitical concerns

As Internet adoption grew around the world, with companies increasingly serving global and more remote audiences, providers like Cloudflare had to continue expanding their physical footprint to keep up with demand. As of the date this blog post was published, Cloudflare has data centers in over 55 countries, and we continue Continue reading

IDG Contributor Network: How will you connect AWS, Azure, and Google Cloud to your SD-WAN?

I’ve been spending a lot of time the past few weeks reviewing SD-WAN vendor cloud offerings. Maybe it’s because of some the announcements in the area. It triggered a bunch of questions from my customers. Maybe it’s because a lot of folks seem to be waking up to the importance of connecting their SD-WAN into the cloud.Regardless, what’s become increasingly apparent to me are the vast differences between vendor implementations. At first glance, the cloud would seem to be just like any other site. Add an SD-WAN node as you would with any other location, let it connect into the SD-WAN, and voila! Job done. Oh, how I wish it was that simple.SD-WAN cloud configurations are like that sweet, devilish 5-year old who can terrorize your home while looking delightfully cherubic. Different tools are needed to manage cloud implementations than the cloud. Routing into the IaaS cloud is rarely simple. Properly configuring the cloud—setting up the VPCs, installing the SD-WAN nodes, provisioning the IPsec connectivity—all take time. It’s why SD-WAN vendors have made a point of introducing cloud-specific implementations.To read this article in full or to leave a comment, please click here

Up next: Disposable IoT

What if every package shipped contained a $0.20 tracker chip that could report when and approximately where the package was opened?That's a service that internet-of-things wireless network operator Sigfox thinks its partners could offer over the next year.It demonstrated a prototype wireless module contained in a cardboard envelope at its partner meeting in Prague on Tuesday, triggering the sending of a text message when the envelope was opened.Ripping open the envelope, Sigfox scientific director Christophe Fourtet showed off what he described as "an ultra-thin battery, ultra-thin contacts, and an ultra-low cost module, a few tens of cents." Seconds later, his phone buzzed to report delivery of the package.To read this article in full or to leave a comment, please click here

Up next: Disposable IoT

What if every package shipped contained a $0.20 tracker chip that could report when and approximately where the package was opened?That's a service that internet-of-things wireless network operator Sigfox thinks its partners could offer over the next year.It demonstrated a prototype wireless module contained in a cardboard envelope at its partner meeting in Prague on Tuesday, triggering the sending of a text message when the envelope was opened.Ripping open the envelope, Sigfox scientific director Christophe Fourtet showed off what he described as "an ultra-thin battery, ultra-thin contacts, and an ultra-low cost module, a few tens of cents." Seconds later, his phone buzzed to report delivery of the package.To read this article in full or to leave a comment, please click here

Managing users on Linux systems

Your Linux users may not be raging bulls, but keeping them happy is always a challenge as it involves managing their accounts, monitoring their access rights, tracking down the solutions to problems they run into, and keeping them informed about important changes on the systems they use. Here are some of the tasks and tools that make the job a little easier.Configuring accounts Adding and removing accounts is the easier part of managing users, but there are still a lot of options to consider. Whether you use a desktop tool or go with command line options, the process is largely automated. You can set up a new user with a command as simple as adduser jdoe and a number of things will happen. John’s account will be created using the next available UID and likely populated with a number of files that help to configure his account. When you run the adduser command with a single argument (the new username), it will prompt for some additional information and explain what it is doing.To read this article in full or to leave a comment, please click here

BrandPost: When It Comes To SD-WANs, WAN Optimization Should Be A No-Brainer

As someone who has been following enterprise WAN architectures for decades, I find their evolution fascinating, especially the number of new technologies that have been deployed in isolation. For example, WAN optimization and SD-WANs are often discussed as separate solutions.  From my perspective, I can’t fathom why a business would deploy an SD-WAN and not implement WAN optimization as part of it.  If you’re going to go through the work of modernizing your WAN architecture, then why wouldn’t you integrate optimization technologies into your deployment right from the start?To read this article in full or to leave a comment, please click here

1 … 1,582 1,583 1,584 1,585 1,586 … 3,414