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Category Archives for "Networking"

What is DNS and how does it work?

The Domain Name System (DNS) is one of the foundations of the internet, yet most people outside of networking probably don’t realize they use it every day to do their jobs, check their email or waste time on their smartphones.At its most basic, DNS is a directory of names that match with numbers. The numbers, in this case are IP addresses, which computers use to communicate with each other. Most descriptions of DNS use the analogy of a phone book, which is fine for people over the age of 30 who know what a phone book is.[ Don’t miss customer reviews of top remote access tools and see the most powerful IoT companies . | Get daily insights by signing up for Network World newsletters. ] If you’re under 30, think of DNS like your smartphone’s contact list, which matches people’s names with their phone numbers and email addresses. Then multiply that contact list by everyone else on the planet.To read this article in full, please click here

What is DNS and how does it work?

The Domain Name System (DNS) is one of the foundations of the internet, yet most people outside of networking probably don’t realize they use it every day to do their jobs, check their email or waste time on their smartphones.At its most basic, DNS is a directory of names that match with numbers. The numbers, in this case are IP addresses, which computers use to communicate with each other. Most descriptions of DNS use the analogy of a phone book, which is fine for people over the age of 30 who know what a phone book is.[ Don’t miss customer reviews of top remote access tools and see the most powerful IoT companies . | Get daily insights by signing up for Network World newsletters. ] If you’re under 30, think of DNS like your smartphone’s contact list, which matches people’s names with their phone numbers and email addresses. Then multiply that contact list by everyone else on the planet.To read this article in full, please click here

IDG Contributor Network: It’s time for SD-WAN to grow up

2018 has already been hailed as the “Year of SD-WAN” and while the promises of this technology are undoubtedly appealing to most enterprises, it’s equally important to understand its potential shortcomings.The “Death of the Router” has been largely exaggerated by those trying to market their “silver bullet” solutions that still lack basic routing capabilities. While there’s no doubt that years of technical debt have added some unnecessary functionality to the modern router, it’s worth acknowledging that there are many “table-stakes” features leveraged that need to exist in any SD-WAN solution that is meant to replace those boring routers.I’d like to highlight some often-missed considerations drawn from hard lessons learned by SD-WAN early adopters. Specific names and details have been left out to protect both the guilty and innocent.To read this article in full, please click here

IDG Contributor Network: It’s time for SD-WAN to grow up

2018 has already been hailed as the “Year of SD-WAN” and while the promises of this technology are undoubtedly appealing to most enterprises, it’s equally important to understand its potential shortcomings.The “Death of the Router” has been largely exaggerated by those trying to market their “silver bullet” solutions that still lack basic routing capabilities. While there’s no doubt that years of technical debt have added some unnecessary functionality to the modern router, it’s worth acknowledging that there are many “table-stakes” features leveraged that need to exist in any SD-WAN solution that is meant to replace those boring routers.I’d like to highlight some often-missed considerations drawn from hard lessons learned by SD-WAN early adopters. Specific names and details have been left out to protect both the guilty and innocent.To read this article in full, please click here

The Larger Facebook/Cambridge Analytica Question: Is this really what we signed up for?

Mark Zuckerburg’s testimony before the US Congress today and the flood of news about the privacy breach at Facebook and revelations that the company mishandled the data of millions of people has me asking:

Is this really what we signed up for?

It is clear that we are not in control of our online information nor do we really have any idea how it is bought, sold, or used.

For some of us, signing up for a social network like Facebook was about staying in touch with our kids and friends. For others, it was an easy way to reach new customers, or gather a community behind a social project. Yes, many of us figured out that our information was being used to serve up ‘relevant’ ads: as a matter of fact, that seems pretty standard in today’s online world. But that’s only a small part of a much bigger picture.

In the past few weeks we have found out – yet again – that information about ourselves, and our friends and contacts was used far beyond what we intended. We have been profiled, pigeon-holed, politically manipulated, and played like pawns in someone else’s chess game. I’d challenge you to Continue reading

Datanauts 129: Automation And Security In AWS

Today the Datanauts explore three key concepts to make cloud management and operations more bearable: automation, understanding new services and capabilities, and security.

Our guest is Kenneth Hui, Technical Marketing Engineer at Rubrik. Ken blogs at Cloud Architect Musings. While our conversation focuses primarily on AWS, many of the principles discussed will apply to any cloud platform.

In part one we parse automation, infrastructure-as-code, and DevOps to understand how these concepts are related, how they differ, and why culture and human behavior matter more than labels.

Part two explores the latest offerings in AWS including serverless, container support, and machine learning.

Part three tackles cloud security essentials including encryption, not exposing S3 buckets, and best practices.

Show Links:

Infrastructure as Code: A Reason to Smile – Thoughtworks.com

DevOps Culture (Part 1) – IT Revolution

The AWS Love/Hate Relationship with Data Gravity – Cloud Architect Musings

Data Encryption in the Cloud, Part 1: Why You Should Care – Cloud Architect Musings

Last Week In AWS – Newsletter

Unsecured server exposed thousands of FedEx customer records – ZDNet

Vault Project – Vault.io

AWS Blogs – Amazon

AWS Security – Amazon

AWS Security Best Practices – Amazon

AWS Faragate – Continue reading

History Of Networking – Dino Farinacci – History of LISP

 In this History of Networking episode of Network Collective we chat with Dino Farinacci about his contributions to the Locator/ID Separation Protocol, or LISP.
Dino Farinacci
Guest
Russ White
Host
Jordan Martin
Host
Donald Sharp
Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Dino Farinacci – History of LISP appeared first on Network Collective.

Intel FPGAs step toward mainstream in Dell, Fujitsu enterprise servers

[ Learn about how server disaggregation can boost data center efficiency and learn the how Windows Server 2019 embraces hyperconverged data centers . | Get regularly scheduled insights by signing up for Network World newsletters. ] Enterprises should find it easier to tap the benefits of FPGAs now that Dell EMC and Fujitsu are putting Intel Arria 10 GX Programmable Acceleration Cards into off-the-shelf servers for the data center.To read this article in full, please click here

Intel FPGAs step toward mainstream in Dell, Fujitsu enterprise servers

[ Learn about how server disaggregation can boost data center efficiency and learn the how Windows Server 2019 embraces hyperconverged data centers . | Get regularly scheduled insights by signing up for Network World newsletters. ] Enterprises should find it easier to tap the benefits of FPGAs now that Dell EMC and Fujitsu are putting Intel Arria 10 GX Programmable Acceleration Cards into off-the-shelf servers for the data center.To read this article in full, please click here

Splunk debuts IIoT product for in-depth analytics

Splunk is introducing software that enables pulling in information from industrial IoT devices and analyzing it.Called Industrial Asset Intelligence, it is in essence a pre-packaged set of analytical tools used on top of the Splunk Enterprise platform, designed for use in a wide range of IIoT applications, said Seema Haji, the company’s director of product marketing for IoT.[ For more on IoT see tips for securing IoT on your network, our list of the most powerful internet of things companies and learn about the industrial internet of things. | Get regularly scheduled insights by signing up for Network World newsletters. ]  “Industry 4.0’s kind of broad – it encompasses customers from transportation, oil and gas, energy and utilities companies,” she said. “These companies are using Splunk enterprise today … we see them using Splunk enterprise to gain insight into their industrial operations.”To read this article in full, please click here

MPLS 101 – MPLS VPNs

In our last post, we removed our last piece of static configuration and replaced static routes with BGP.  We’re going to pick up right where we left off and discuss another use case for MPLS – MPLS VPNs.  Really – we’re talking about two different things here.  The first is BGP VPNv4 address families used for route advertisement.  The second is using MPLS as a data plane to reach the prefixes being announced by VPNv4 address family.  If that doesn’t make sense yet – don’t worry – it will be pretty clear by the end of the post.  So as usual – let’s jump right into this and talk about our lab setup.

As I mentioned in the last post, setting up BGP was a prerequisite to this post – so since that’s the case – Im going to pick up right where I left off.  So I’ll post the lab topology picture here for the sake of posting a lab topology – but if you want to get your configuration prepped – take a look at the last post.  At the end of the last post we had our Continue reading

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