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Category Archives for "Networking"

VMware NSX Killed My EVPN Fabric

A while ago I had an interesting discussion with someone running VMware NSX on top of VXLAN+EVPN fabric - a pretty common scenario considering:

  • NSX’s insistence on having all VXLAN uplink from the same server in the same subnet;
  • Data center switching vendors being on a lemming-like run praising EVPN+VXLAN;
  • Non-FANG environments being somewhat reluctant to connect a server to a single switch.

His fabric was running well… apart from the weird times when someone started tons of new VMs.

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Ansible + ServiceNow Part 3: Making outbound RESTful API calls to Red Hat Ansible Tower

blog_ansible-and-service-now-3

Red Hat Ansible Tower offers value by allowing automation to scale in a checked manner - users can run playbooks for only the processes and targets they need access to, and no further. 

Not only does Ansible Tower provide automation at scale, but it also integrates with several external platforms. In many cases, this means that users can use the interface they are accustomed to while launching Ansible Tower templates in the background. 

One of the most ubiquitous self service platforms in use today is ServiceNow, and many of the enterprise conversations had with Ansible Tower customers focus on ServiceNow integration. With this in mind, this blog entry walks through the steps to set up your ServiceNow instance to make outbound RESTful API calls into Ansible Tower, using OAuth2 authentication. 

This is part 3 in a multi-part series, feel free to refer to part 1 and part 2 for more context.

The following software versions are used:

  • Ansible Tower: 3.4, 3.5
  • ServiceNow: London, Madrid

If you sign up for a ServiceNow Developer account, ServiceNow offers a free instance that can be used for replicating and testing this functionality. Your ServiceNow instance needs to be able Continue reading

Dark Traffic

This a report on a four-year long experiment in advertising a 'dark' prefix on the internet and examining the profile of unsolicited traffic that is sent to a traffic collector.

Aparavi’s Storage Focus Is on Data, Not Devices

The offering features a hybrid and multi-cloud file backup tool that enables long-term retention...

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Schneider Electric launches wall-mounted server rack

Floor space is often at a premium in a cramped data center, and Schneider Electric believes it has a fix for that: a wall-mounted server rack.The EcoStruxure Micro Data Center Wall Mount is a 6U design, meaning it has the capacity of six rack units. Schneider is pushing its space-saving option as an edge solution. The company's EcoStruxure IT Expert remote management and vulnerability assessment service will be available for the wall-mount units, even when installed in non-secured edge locations. READ MORE: Micro-modular data centers set to multiplyTo read this article in full, please click here

Schneider Electric launches wall-mounted server rack

Floor space is often at a premium in a cramped data center, and Schneider Electric believes it has a fix for that: a wall-mounted server rack.The EcoStruxure Micro Data Center Wall Mount is a 6U design, meaning it has the capacity of six rack units. Schneider is pushing its space-saving option as an edge solution. The company's EcoStruxure IT Expert remote management and vulnerability assessment service will be available for the wall-mount units, even when installed in non-secured edge locations. READ MORE: Micro-modular data centers set to multiplyTo read this article in full, please click here

Sprint’s 5G Prospects, Future at Stake Amid Merger Uncertainty

“I wouldn’t put another dime into the network," said industry analyst Earl Lum. "They’ve...

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Heavy Networking 476: Running ACI And NSX In The Same Data Center

On today's Heavy Networking our guest walks us through a project that brought both ACI and NSX into the same data center at a very large company. We discuss the drivers for ACI in the underlay and NSX in the overlay, the learning curves on each product, challenges and successes, and more. Our guest is Derek Wilson, a Principal Network Consultant.

The post Heavy Networking 476: Running ACI And NSX In The Same Data Center appeared first on Packet Pushers.

Arm CEO Segars: Silicon Partners Can Now Create ‘Fully Unique Chips’

Arm CEO Simon Segars said that the company is adding a new feature to its processors that will...

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US Eyes Nokia, Ericsson Subsidies to Fight Huawei

U.S. government officials are floating the idea of subsidizing Huawei's competitors to match the...

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Forward Networks Secures Funds, Focused on Network Operations

The company raised $35 million in Series C funding that was led by Goldman Sachs, which is one of...

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Microsoft, Pivotal Team on Azure Spring Cloud

The platform uses Kubernetes to make it easier to deploy and operate Spring Cloud applications and...

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Early adopter finds SD-WAN yields better management, costs, uptime

Managing the Wide Area Network (WAN) for Redmond Inc., a supplier of industrial and commercial products – from salt that’s used to protect winter roadways to organic dairy products and health items – is an easier job today for the company’s technical project manager Aaron Gabrielson than it was a year ago.Redmond manages a phone system, point of sale and fax centrally out of headquarters in Heber City, Utah, which means each of Redmond’s 10 branch sites across the Midwest need a reliable connection back to headquarters in Utah. That’s easier for some sites, like those in Salt Lake City, than others, such as rural areas where there may only be a handful of workers on a farm.To read this article in full, please click here

Learn how to invest & save for your future with GoBankingRates.com

The average consumer constantly thinks about money, and yet, many misconceptions and unknowns plague our minds when our own personal finances are brought up. Financial literacy is an often neglected topic despite it making a major impact on our lives and our future. If terms like CD rates, mortgages, APR, and taxes leave you scratching your head in confusion, then GOBankingRates.com is here to help.GOBankingRates.com is your one-stop source for financial education. It offers a wealth of information (pun intended) from financial experts on everything money-related, from opening a bank account and credit card to investing in stocks for the first time. GOBankingRates.com demystifies money and provides step-by-step guidance on how to take control of your financial journey and live richer.To read this article in full, please click here

Templating Device Configurations

One of the core functions of network automation is the ability to generate network device configurations from a template. This is a discrete, intentional process which unfortunately is often conflated with the totally separate act of applying a rendered configuration to a device. In this article we'll look at how to establish a template from existing configurations, define and organize variable data, and ultimately render a series of configurations automatically using a simple Python script.

What is a Template?

The term template describes any sort of mold or pattern from which new, identical objects can be created. For instance, a cookie cutter is a sort of template that can be used to create an arbitrary number of identically-shaped cookies from a sheet of dough. But in our case, we're inexplicably more interested in creating network device configuration files than baking cookies, and creating wholly identical copies of a file isn't terribly useful, since each network device typically has a handful of unique characteristics such as hostname, authentication credentials, IP addresses, and so on.

To address this need to define changing pieces of data within an otherwise unchanging document, we employ variables. A variable serves as a placeholder within the template, Continue reading

Announcing the 2020 U.S. Presidential Campaign Audit

Today, the Internet Society’s Online Trust Alliance released a new report, the “2020 U.S. Presidential Campaign Audit,” analyzing the 23 top current presidential campaigns and their commitment to email/domain protection, website security, and responsible privacy practices. OTA evaluated the campaigns using the same methodology we used to assess nearly 1,200 organizations in the main Online Trust Audit released in April.

An alarming 70% of the campaign websites reviewed in the audit failed to meet OTA’s privacy and security standards, potentially exposing visitors to unnecessary risks. Only seven (30%) of the analyzed campaigns made the Honor Roll, a designation recognizing campaigns that displayed a commitment to using best practices to safeguard visitor information. The 2020 campaigns, taken together as a sector, lagged behind the Honor Roll average of all other sectors (70%) in the 2018 Online Trust Audit, and were far short of the Honor Roll achievement of 91% by U.S. federal government organizations.

To qualify for the Honor Roll, campaigns must have an overall score of 80% or higher, with no failure in any of the three categories examined. The campaigns who made the Honor Roll are:

IBM Security, McAfee Spearhead Open Cybersecurity Alliance

The new group targets interoperable security technologies. IBM Security and McAfee contributed the...

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Talk Transcript: How Cloudflare Thinks About Security

Talk Transcript: How Cloudflare Thinks About Security
Image courtesy of Unbabel
Talk Transcript: How Cloudflare Thinks About Security

This is the text I used for a talk at artificial intelligence powered translation platform, Unbabel, in Lisbon on September 25, 2019.

Bom dia. Eu sou John Graham-Cumming o CTO do Cloudflare. E agora eu vou falar em inglês.

Thanks for inviting me to talk about Cloudflare and how we think about security. I’m about to move to Portugal permanently so I hope I’ll be able to do this talk in Portuguese in a few months.

I know that most of you don’t have English as a first language so I’m going to speak a little more deliberately than usual. And I’ll make the text of this talk available for you to read.

But there are no slides today.

I’m going to talk about how Cloudflare thinks about internal security, how we protect ourselves and how we secure our day to day work. This isn’t a talk about Cloudflare’s products.

Culture

Let’s begin with culture.

Many companies have culture statements. I think almost 100% of these are pure nonsense. Culture is how you act every day, not words written in the wall.

One significant piece of company culture is the internal Security Incident mailing list Continue reading