Do I Need Redundant Firewalls?

One of my readers sent me this question:

I often see designs involving several more than 2 DCs spread over different locations. I was actually wondering if that makes sense to bring high availability inside the DC while there's redundancy in place between the DCs. For example, is there a good reason to put a cluster of firewalls in a DC, when it is possible to quickly fail over to another available DC, as a redundant cluster increases costs, licenses and complexity.

Rule#1 of good engineering: Know Your Problem ;) In this particular case:

BGP in MPLS Layer 3 VPN – BGP as a PE-CE Routing Protocol

BGP can be used as a PE-CE routing protocol in MPLS Layer 3 VPN. Also Service Providers run MP-BGP (Multiprotocol BGP) if they have MPLS Layer 3 VPN. In this article, MP-BGP will not be explained since it has been explained here earlier in detail. When BGP is used as a PE-CE routing protocol between […]

The post BGP in MPLS Layer 3 VPN – BGP as a PE-CE Routing Protocol appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

ICANN and the future of DNS and internet

How Does Internet Work - We know what is networking

I sorry to put here something that is not really technical but with a blog with the name “howdoesinternetwork.com” it would be strange not to follow the story about the future of DNS governance giving the fact that DNS is a crutial part of internet functionality. You probably know how the internet works giving the fast that you are visiting a blog like this. Regardless of that, it will not hurt to explain in few words the importance of DNS (Domain Name System) for normal internet operation. Let’s surf to se how this works If you want to open this webpage

ICANN and the future of DNS and internet

Disruptive Technologies on the Post Exascale Horizon

Although the timeline for reaching exascale class computing continues to stretch farther into the future, research teams are keeping an eye on what technologies will shape the machines of the post-exascale timeframe, which is in the 2022-2030 timeframe.

While many of the technologies stated in a comprehensive report about post-exascale supercomputers are already in process, albeit in various stages of development and adoption, there is little consensus about which mode of computing will lead us into an era of unprecedented data and simulation potential. Still, the effort on behalf of the EuroLab-4-HPC program is notable in its divisions between where …

Disruptive Technologies on the Post Exascale Horizon was written by Nicole Hemsoth at The Next Platform.

7 Linux command line tools you didn’t know you need

Off to workImage by PixabayThe Linux world offers an incredible range of free and open source tools to do everything you can think of and lots of things you probably haven’t ever thought of. In this roundup we highlight seven command line utilities you probably haven’t run into before and we’ve got everything from monitoring file system events to running re-attachable ssh sessions to printing banners.To read this article in full or to leave a comment, please click here

SkyGiraffe’s Tableau connector aims to ease business data visualization

While business intelligence software like Tableau helps companies better understand the data that they have saved up in systems of record like databases and CRM software, it can be hard to get the entire picture of a business from the plethora of different sources available.SkyGiraffe is launching a new connector Tuesday to help with that by allowing companies to take live data from a diverse set of systems of record and visualize it in Tableau. The connector is supposed to give businesses a single consistent means of visualizing data, without having to repeatedly configure a bunch of different integrations.To read this article in full or to leave a comment, please click here

BrandPost: Network Performance On Demand

Organizations today need speed and reliability, but also want flexibility and freedom to adjust their services levels and costs to meet changing needs. As health care providers shift to electronic records and files, they’re finding the need to scale up network performance but in a cost-conscious environment are wary about locking themselves into expensive options they need only for high-peak periods.For the Austin Cancer Center, huge imaging files can be a vital component of diagnosis and treatment. But moving large data sets such as digital PET scan images of a gigabyte or more between the 12 campuses in the system would create a huge bottleneck over most enterprise Ethernet LANs, or a huge expense to create peak capacity that is often underutilized.To read this article in full or to leave a comment, please click here

Ganging up Accelerators to Beat Scale Limits

It is not news that offloading work from CPUs to GPUs can grant radical speedups, but what can come as a surprise is that scaling of these workloads doesn’t change just because they run faster. Moving beyond a single node means encountering a performance wall, that is, unless something can glue everything together so it can scale at will.

There are already technologies that can take multiple units of compute and have them share work from supercomputing and other areas (consider ScaleMP, for instance) but there are limitations to these approaches and thus far, they haven’t extended to meet the …

Ganging up Accelerators to Beat Scale Limits was written by Nicole Hemsoth at The Next Platform.

AllSeen’s merger with OCF brings IoT closer to common ground

Two of the main IoT standards groups have merged, probably bringing consumers closer the day when your lights, your refrigerator, and the power company can all talk to each other.On Monday, the Open Connectivity Foundation and the AllSeen Alliance announced they would merge under the OCF name. The two groups include companies such as Intel, Microsoft, Qualcomm, Samsung, Cisco Systems, GE Digital, and Haier -- possibly a critical mass of IoT component and product makers. OCF's scope even extends beyond home IoT into some industrial technologies.To read this article in full or to leave a comment, please click here

27% off SanDisk Connect Wireless Stick 200GB – Deal Alert

The SanDisk Connect wireless stick is a flash drive with a unique twist -- you can access it wirelessly. Whether it's in your pants pocket, in your bag, or on the picnic table at your campsite, the Connect wireless stick lets you stream media or move files wirelessly with up to three computers, phones or tablets simultaneously. Connections are made via built-in wifi (think "hotspot"), so no external wireless or internet services are needed. A USB connection is also available, if desired. Storage on this model is a generous 200GB. Reviewers on Amazon report at least 8-10 hours of battery life on one charge. This model is currently discounted 27%, from $119.99 down to $87.56. See it now on Amazon.To read this article in full or to leave a comment, please click here

27% off SanDisk Connect Wireless Stick 200GB – Deal Alert

The SanDisk Connect wireless stick is a flash drive with a unique twist -- you can access it wirelessly. Whether it's in your pants pocket, in your bag, or on the picnic table at your campsite, the Connect wireless stick lets you stream media or move files wirelessly with up to three computers, phones or tablets simultaneously. Connections are made via built-in wifi (think "hotspot"), so no external wireless or internet services are needed. A USB connection is also available, if desired. Storage on this model is a generous 200GB. Reviewers on Amazon report at least 8-10 hours of battery life on one charge. This model is currently discounted 27%, from $119.99 down to $87.56. See it now on Amazon.To read this article in full or to leave a comment, please click here

AllSeen, OCF Merge to Foster IoT Interoperability

Both projects will now be sponsored by the Linux Foundation.

Samsung Note7: A phenomenal phablet flame-out timeline

The Samsung Galaxy Note7 smartphone's demise has been swift: Introduced in early August, the phablet is now off the market due to it being a fire hazard. Early reviews of the Samsung Galaxy Note7 phablet were generally positive. Headlines described the latest Apple iPhone 7 rival as a "Pricey phablet made for power users" and "an excellent phone for the high-price market." But batteries that burn too hot and burst into flames have resulted in much less glowing headlines and a full-fledged business disaster for Samsung, which has now issued a recall of both the original and replacement Note7 phones. To read this article in full or to leave a comment, please click here

Digitalk Deploys Affirmed’s Software to Create Mobile Promotions

Digitalk helps mobile operators extend their networks to the cloud.

Apple Mac shipments take a beating in Q3 as PC shipments decline

Sales of Windows PCs fared better than Apple Macs during the third quarter this year.Third-quarter PC shipments declined by 3.9 percent compared to the same quarter last year, but Mac shipments dropped by 13 percent. PC shipments totaled 68 million units, according to IDC.The declines weren't as bad as expected, and were roughly 3.2 percent ahead of IDC's initial projections, the research firm said.In the top five PC companies, fourth-placed Apple registered the largest decline, with the 13 percent drop in Mac shipments. Apple's Mac sales totaled 5 million units during the quarter, declining from 5.76 million units in the same quarter a year ago.To read this article in full or to leave a comment, please click here

Facebook, Twitter cut access to monitoring tool used by police

Facebook, Instagram, and Twitter were handing over data to a monitoring tool that law enforcement agencies were using to track protesters, according to the American Civil Liberties Union.The social media analysis tool, called Geofeedia, had been harvesting posts from the social media networks for surveillance purposes, and more than 500 law enforcement and public safety agencies have been using it, the ACLU said in a Tuesday report.Through a public records request, the ACLU found that Geofeedia had entered into agreements with Facebook, Twitter, and Instagram for their users' data.To read this article in full or to leave a comment, please click here

Facebook, Twitter cut access to monitoring tool used by police

Facebook, Instagram, and Twitter were handing over data to a monitoring tool that law enforcement agencies were using to track protesters, according to the American Civil Liberties Union.The social media analysis tool, called Geofeedia, had been harvesting posts from the social media networks for surveillance purposes, and more than 500 law enforcement and public safety agencies have been using it, the ACLU said in a Tuesday report.Through a public records request, the ACLU found that Geofeedia had entered into agreements with Facebook, Twitter, and Instagram for their users' data.To read this article in full or to leave a comment, please click here

The Note 7 is dead: What Samsung must do now

Samsung formally stopped production, sales and exchanges of its Note7 smartphones early Tuesday, after several weeks of reports that the devices -- and even their replacements -- overheated, smoked and caught fire.The death of the Note7 will be costly, according to many analysts.Patrick Moorhead of Moor Insights & Strategy has pegged the overall cost to Samsung at $5 billion to $7.5 billion, not including the hard-to-estimate impact on the Samsung brand. Some analysts, including Credit Suisse, said the lost sales on up to 19 million Note7 phones is about $17 billion.To read this article in full or to leave a comment, please click here

With help from Docker, Google’s Go jumps in popularity

Google's Go language, which anchors projects like Kubernetes and Docker, keeps climbing the charts in language popularity.Ranked 65th a year ago in the Tiobe Index of language popularity, it has climbed to 16th this month and is on track to become Tiobe's Programming Language of the Year, a designation awarded to the language with the biggest jump in the index.[ Find out how to get ahead with our career development guide for developers. | The art of programming is changing rapidly. We help you navigate what's hot in programming and what's going cold. | Keep up with hot topics in programming with InfoWorld's Application Development newsletter. ] "Google's Go language seems to be unrivaled, probably boosted by the immense popularity of Docker, the container application that is written in Go," said a report accompanying the index, which gauges popularity based on a formula assessing searches on languages in popular search engines.To read this article in full or to leave a comment, please click here

Igneous Melds ARM Chips And Disks For Private S3 Storage

The only companies that want – and expect – all compute and storage to move to the public cloud are those public clouds that do not have a compelling private cloud story to tell. But the fact remains that for many enterprises, their most sensitive data and workloads cannot – and will not – move to the public cloud.

This almost demands, as we have discussed before, the creation of private versions of public cloud infrastructure, which interestingly enough, is not as easy as it might seem. Scaling infrastructure down so it is still cost effective and usable by …

Igneous Melds ARM Chips And Disks For Private S3 Storage was written by Timothy Prickett Morgan at The Next Platform.