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Category Archives for "Networking"

Using CNI with Docker

In our last post we introduced ourselves to CNI (if you haven’t read that yet, I suggest you start there) as we worked through a simple example of connecting a network namespace to a bridge.  CNI managed both the creation of the bridge as well as connecting the namespace to the bridge using a VETH pair.  In this post we’ll explore how to do this same thing but with a container created by Docker.  As you’ll see, the process is largely the same.  Let’s jump right in.

This post assumes that you followed the steps in the first post (Understanding CNI) and have a ‘cni’ directory (~/cni) that contains the CNI binaries.  If you don’t have that – head back to the first post and follow the steps to download the pre-compiled CNI binaries.  It also assumes that you have a default Docker installation.  In my case, Im using Docker version 1.12.  

The first thing we need to do is to create a Docker container.  To do that we’ll run this command…

user@ubuntu-2:~/cni$ sudo docker run --name cnitest --net=none -d jonlangemak/web_server_1
835583cdf382520283c709b5a5ee866b9dccf4861672b95eccbc7b7688109b56
user@ubuntu-2:~/cni$

Notice that when we ran the command we told Docker to use a network of ‘none’. Continue reading

IDG Contributor Network: What is OWASP, and why it matters for AppSec

Modern software development is firmly focused on speed. The race to be first in the market is extremely competitive. To innovate, companies develop at breakneck pace, quickly establishing feedback loops that allow them to hone their software. Security, however, is often an afterthought for stressed developers and the business people pushing them to deliver faster.The importance of application security (AppSec) is widely understood, with 97 percent of respondents to the SANS Institute’s 2016 State of Application Security report revealing they have an AppSec program in place.To read this article in full or to leave a comment, please click here

IDG Contributor Network: What is OWASP, and why it matters for AppSec

Modern software development is firmly focused on speed. The race to be first in the market is extremely competitive. To innovate, companies develop at breakneck pace, quickly establishing feedback loops that allow them to hone their software. Security, however, is often an afterthought for stressed developers and the business people pushing them to deliver faster.The importance of application security (AppSec) is widely understood, with 97 percent of respondents to the SANS Institute’s 2016 State of Application Security report revealing they have an AppSec program in place.To read this article in full or to leave a comment, please click here

Senator to file bill requiring border agents to get a warrant before searching phones

In moments of optimism, I’d like to believe there is still some common ground upon which liberals and conservatives – even supporters of President Trump – can stand with firm resolve. One such patch should be ensuring privacy protections for the digital devices and sensitive personal information of all U.S. citizens when they pass through border checkpoints.Toward that end, U.S. Sen. Ron Wyden, D-Ore., has signaled his intention to file legislation that would require customs and law enforcement agencies to acquire a warrant before compelling access to a U.S. traveler’s electronic device and also prohibit the growing practice of demanding social media identities and passwords. In a letter to John Kelly, director of homeland security, Wyden poses the following questions:To read this article in full or to leave a comment, please click here

Senator to file bill requiring border agents to get a warrant before searching phones

In moments of optimism, I’d like to believe there is still some common ground upon which liberals and conservatives – even supporters of President Trump – can stand with firm resolve. One such patch should be ensuring privacy protections for the digital devices and sensitive personal information of all U.S. citizens when they pass through border checkpoints.Toward that end, U.S. Sen. Ron Wyden, D-Ore., has signaled his intention to file legislation that would require customs and law enforcement agencies to acquire a warrant before compelling access to a U.S. traveler’s electronic device and also prohibit the growing practice of demanding social media identities and passwords. In a letter to John Kelly, director of homeland security, Wyden poses the following questions:To read this article in full or to leave a comment, please click here

10 happiest cities for CIOs

CIOs appear to be a relatively happy bunch, despite the pressures of the job.Robert Half Technology surveyed 2,500 U.S. CIOs in 25 metropolitan areas. As a group, the tech leaders rated their overall job satisfaction at 8.5 in a 10-point scale. Respondents from 10 cities reported above-average happiness, with Miami hosting the most content IT chiefs.The top 10 cities for CIO job satisfaction, according to the tech staffing firm, are:1. Miami2. Boston3. Des Moines, Iowa4. Indianapolis5. Cincinnati6. Minneapolis7. Raleigh, NC8. Salt Lake City9. Dallas10. San FranciscoTo read this article in full or to leave a comment, please click here

On the ‘net: Net Neutrality Explained


Net Neutrality seems like a simple, easy to understand concept—but it seems the deeper you dig into the concept, this appearance of simplicity is actually just a light coat of surfacing on a very complex set of problems. The best place to begin is with the basic premise of net neutrality: providers who are transporting data should treat every packet the same, regardless of the source, the destination, or the service. —Tech Target

The post On the ‘net: Net Neutrality Explained appeared first on 'net work.

IDG Contributor Network: Ayyeka Sigfox IoT sensors monitor sewage deep underground San Francisco

San Francisco depends on a thousand miles of sewers to keep the city running smoothly.The city collects up to 500 million gallons of waste water in a day when it rains. This waste water is transported to one of three treatment plants where pollutants are removed before being discharged into San Francisco Bay.Processing sewage is challenging in San Francisco because the city has the Pacific Ocean on three sides of it. During storm conditions, groundwater and storm water can overload the sewage system. Physical, chemical and biological processes remove contaminants from the waste water. This produces environmentally safe water and sewage sludge as a byproduct.To read this article in full or to leave a comment, please click here

BrandPost: DevOps at Wells Fargo

Portions of this post were originally posted on the Puppet blog, and are republished here with Puppet's permission.As one of the world's largest banks, Wells Fargo competes by innovating its IT. At the heart of its innovation is the ability to continually launch, maintain and update software. You can get some sense of the scale when you hear that the Wells Fargo IT organization manages an infrastructure that supports 1 billion transactions per day.With more than 120,000 servers, 55,000 network devices, more than 2,300 applications in production, and more than 6,000 ways to deliver change to a server, Wells Fargo IT needs a consistent way to manage infrastructure, and a consistent way to plan each application's architecture.To read this article in full or to leave a comment, please click here

Worth Reading: Overcoming data center cabling challenges

Now, many users have started employing high-density 40GbE switch line cards to break out as part of 10GbE applications. For example, a high-density 10GbE SFP+ line card has 48x10GbE ports, whereas a high-density 40GbE QSFP+ board may have 36x40GbE ports. As such, a 40GbE line card can be used to obtain 4×36 = 144x10GbE ports in the same cabling space and power-consumption conditions, thus reducing the cost and power consumption of the single-port 10GbE. —Data Center Journal

The post Worth Reading: Overcoming data center cabling challenges appeared first on 'net work.

MobileIron jumps into IoT market, not a moment too soon

Mobile device management vendor MobileIron announced today that it would form a dedicated IoT division and hire Intel and GE veteran Santhosh Nair to run it, in a move that analysts have been quick to praise. MobileIron’s statement said that the company plans to have a saleable IoT product on the market sometime this year, and that the IoT offering will be designed with security in mind. +ALSO ON NETWORK WORLD: How San Diego fights off 500,000 cyberattacks a day + Java and Python FTP attacks can punch holes through firewallsTo read this article in full or to leave a comment, please click here

Why Amazon is knocking $8.62 off most orders of $50-plus on Feb. 22

In case you're wondering why Amazon is suddenly offering to clip $8.62 from most purchases of $50 or more this Wednesday, Feb. 22, here's the deal...The company is patting itself on the back for ranking #1 in an annual Harris Corporate Reputation Poll (just ahead of Wegmans, Publix, Johnson & Johnson and Apple). Amazon scored an 86.27, so is discounting purchases by the similar looking $8.62.MORE: The clumsy & shocking truth about computer-related injuriesTo read this article in full or to leave a comment, please click here

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