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Category Archives for "Networking"

What is hybrid cloud computing?

Hybrid cloud: Many believe it’s the eventual state that most businesses will operate in – some infrastructure resources on premises, others in the public cloud. Others believe it's a term that has been muddled by varied definitions from a range of vendors, diminishing the term to now be vague and nebulous.So, what does hybrid cloud really mean and how can users implement it?What is hybrid cloud computing? While there is no one single agreed-upon definition of hybrid cloud computing, perhaps the closest we have is from the National Institutes for Standards in Technology (NIST):(Hybrid) cloud infrastructure is a composition of two or more distinct cloud infrastructures (private, community, or public) that remain unique entities, but are bound together by standardized or proprietary technology that enables data and application portability.. To read this article in full or to leave a comment, please click here

Worth Reading: 10 Layers of Container Security

Containers provide an easy way to package applications and deliver them seamlessly from development to test to production. This helps ensure consistency across a variety of environments, including physical servers, virtual machines (VMs), or private or public clouds. These benefits are leading organizations to rapidly adopt containers in order to easily develop and manage the applications that add business value. —Daniel Oh @ Opensource

The post Worth Reading: 10 Layers of Container Security appeared first on rule 11 reader.

Decoding LACP Port State

It’s frustrating when the output to a show command gives exactly the information needed, but in a format which is unintelligible. So it is with the Partner Port State field in the NXOS show lacp neighbor interface command which reports the partner port state as a hexadecimal value. To help with LACP troubleshooting, here’s a quick breakdown of the port states reported on by LACP, and how they might be seen in Junos OS and NXOS.

LACP Port State

The LACP port state (also known as the actor state) field is a single byte, each bit of which is a flag indicating a particular status. In this table, mux (i.e. a multiplexer) refers to the logical unit which aggregates the links into a single logical transmitter/receiver.

The meaning of each bit is as follows:

Bit Name Meaning
0 LACP_Activity Device intends to transmit periodically in order to find potential members for the aggregate. This is toggled by mode active in the channel-group configuration on the member interfaces.
1 = Active, 0 = Passive.
1 LACP_Timeout Length of the LACP timeout.
1 = Short Timeout, 0 = Long Timeout
2 Aggregation Will allow the link to be aggregated.
1 = Continue reading

Keep IoT under your hat … your hardhat, that is

My wife is an architect, and she sometimes wears a hardhat to job sites. I’ve always thought her bright white hardhat was super cool, but it turns out her model is hopelessly behind the times.When is a hat more than just a hat? That’s because the latest hardhats are no longer just simple combinations of hard plastic and a shock-absorbing suspension so you don’t get knocked out if you walk into an exposed beam or something. The once-humble hardhat has now been upgraded to include Internet of Things (IoT) capabilities.Also on Network World: 5 things to think about for industrial IoT readiness Michigan-based startup GuardHat Inc. has created an IoT hardhat that includes a beacon designed to continuously transmit data to a safety control center. The idea is for the system to use Wi-Fi or cellular connectivity to track each worker’s location for safety and worker management issues. Most important, GuardHat is built to be able to send alerts to the control center with the hat’s (and hopefully the worker’s) precise location — within 1 meter —  after a fall or other safety incident. (A built-in accelerometer can detect falls, and there’s also an SOS button to summon Continue reading

35% off SanDisk 256GB iXpand Base for iPhone charging and backup – Deal Alert

Here's something you probably didn't know existed. With SanDisk's iXpand iPhone base, you'll never have to worry about losing your memories again. Every time you charge your iPhone with the iXpand Base, it automatically backs up your photos, videos and contacts. The iXpand Base offers plenty of room to save your files in their original quality with no worry about recurring monthly fees for Internet-based storage. Designed for everyday use with a soft rubber top, a sturdy base, and a wrap-around groove to keep your Apple Lightning to USB cable tidy. Its typical list price has been discounted, for now, to $129.99. See this deal on Amazon.To read this article in full or to leave a comment, please click here

Cloud Native: Upgrading a Workflow Engine or Orchestrator

On a train this morning, I read Ivan Pepelnjak’s Twitter stream (because what else is there to do whilst relaxing with a coffee?), I came across this blog post on upgrading virtual-appliances.

Couldn’t agree more with the approach, but what about upgrading a workflow engine or orchestrator? I’ll call this entity a ‘wfeo’ just to make typing this article easier.

The perceived turmoil in undertaking this kind of an upgrade task is enough to make new born babies cry. Fear not. Any half decent wfeo contains it’s gubbins (workflows, drivers, logic, data) in a portable and logical data structure.

Taking StackStorm as an example, each integration (official parlance; ‘pack’), is arranged into a set of directories.
Within each directory are more directories with special names and a set of files like READMEs, configuration schemas and pack information. These top level directories that contain the pack, are portable between install bases of StackStorm giving us the power to easily clone installations, repair logic in case of a troubled upgrade and install logic freshly for new installations.

As with any platform, some syntax might change so always read the release notes for the platform and packs.

Ivan’s point is that you Continue reading

IDG Contributor Network: 4 things reshaping IoT for the future

For many Internet of Things observers, the IoT’s dizzying embracing and subsequent reshaping of modern business and cultural standards seems like it happened only yesterday. Yet the IoT is moving ever faster, developing at an astonishing rate and continuously reinventing itself. So what’s the next step in the long-line of IoT innovation, and how can eager investors cash in on tomorrow’s IoT fad today?Those used to the ever-changing nature of the IoT will know by now that it’s constantly changing, but will also be aware that innovation in certain areas matters much more than gradual developments elsewhere. A quick review of the 4 things reshaping the IoT’s future the most shows which industries will be most vital towards its development and offers an alluring glance of what the IoT of tomorrow will look like:To read this article in full or to leave a comment, please click here

IETF 100 Hackathon: Bringing Innovation and Running Code to the IETF

Interested in contributing running code to the Internet Engineering Task Force (IETF)? Do you see a problem with DNS, DNSSEC, IPv6, TLS, or something else that you want to help fix?

The IETF is holding its next meeting in Singapore in November. Just before IETF 100, on 11-12 November, is a Hackathon to encourage developers to discuss, collaborate and develop utilities, ideas, sample code and solutions that show practical implementations of IETF standards.

Check out the Hackathon Wiki to learn more about how to register, get involved in a project, add your own topic of interest, or even participate remotely if you can’t make it to Singapore next month. You can also read more about a past Hackathon in this IETF Journal article.

As an added bonus, there are some prizes on the line! A panel of judges announces winners in several categories at the end of the event, with winners choosing from sponsor-donated prizes.

Remember, the IETF needs operational expertise to make sure its protocols and standards actually work in real life networks.

The post IETF 100 Hackathon: Bringing Innovation and Running Code to the IETF appeared first on Internet Society.

NSX Real World Use Cases for Pivotal Cloud Foundry

Pivotal cloud foundry is the leading PaaS solution for enterprise customers today, providing a fast way to convert their ideas from conception to production. This is achieved by providing a platform to run their code in any cloud and any language taking care of all the infrastructure stuff for them.

From building the container image, compiling it with the required runtime, deploying it in a highly available mode and connecting it to the required services, PCF allows dev shops to concentrate on developing their code.

While the platform is providing developers with the most simplified experience conceivable, under the hood there are many moving parts that make that happen and plumbing all these parts can be complex. That’s where customers are really enjoying the power of VMware’s SDDC, and the glue between the PaaS and SDDC layers is NSX, it is the enabler that makes it all work.

In this blog post, I detail some of the main uses cases customers has already deployed NSX for PCF on top of vSphere and how PCF and NSX are much better together in the real world.

The use cases customers are deploying with NSX for PCF are varied and ill divide them Continue reading

KRACK proves we need more encryption on the Internet

A serious weakness in Wi-Fi security was made public earlier today. The Key Reinstallation Attack (KRACK) can break Wi-Fi encryption, opening your data up to eavesdropping. This, combined with issues in Linux and Android, make it possible for attackers to change websites you view. This is a serious problem for Wi-Fi Protected Access 2 (WPA2), a protocol used in millions of networks worldwide.

Luckily, the use of Transport Layer Security (TLS) is on the rise. Mozilla’s data shows that over 60% of pages loaded in Firefox use TLS. More and more companies are using encryption for all traffic and removing the ability to connect to unencrypted versions of their sites. When connecting to these sites, KRACK isn’t as big of a deal, because the data is encrypted before it’s sent across Wi-Fi. Even if WPA2 is broken, the data is still secure.

Unfortunately there are still millions of sites that don’t provide this security. Their users are vulnerable to eavesdropping, fake content, malware injection, and more. We need more companies and operators to use TLS and HTTP Strict Transport Security (HSTS) to mitigate the potential impact of KRACK.

Internet traffic exists in layers, which makes it possible to use more Continue reading

KRACK proves we need more encryption on the Internet

A serious weakness in Wi-Fi security was made public earlier today. The Key Reinstallation Attack (KRACK) can break Wi-Fi encryption, opening your data up to eavesdropping. This, combined with issues in Linux and Android, make it possible for attackers to change websites you view. This is a serious problem for Wi-Fi Protected Access 2 (WPA2), a protocol used in millions of networks worldwide.

Luckily, the use of Transport Layer Security (TLS) is on the rise. Mozilla’s data shows that over 60% of pages loaded in Firefox use TLS. More and more companies are using encryption for all traffic and removing the ability to connect to unencrypted versions of their sites. When connecting to these sites, KRACK isn’t as big of a deal, because the data is encrypted before it’s sent across Wi-Fi. Even if WPA2 is broken, the data is still secure.

Unfortunately there are still millions of sites that don’t provide this security. Their users are vulnerable to eavesdropping, fake content, malware injection, and more. We need more companies and operators to use TLS and HTTP Strict Transport Security (HSTS) to mitigate the potential impact of KRACK.
Internet traffic exists in layers, which makes it possible to use more Continue reading

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