Guest Blog: REST API for Cumulus Linux ACLs

Cumulus Linux: REST API for Cumulus Linux ACLs

RESTful control of Cumulus Linux ACLs included a proof of concept script that demonstrated how to remotely control iptables entries in Cumulus Linux.  Cumulus Linux in turn converts the standard Linux iptables rules into the hardware ACLs implemented by merchant silicon switch ASICs to deliver line rate filtering.

Previous blog posts demonstrated how remote control of Cumulus Linux ACLs can be used for DDoS mitigationand Large “Elephant” flow marking.

A more advanced version of the script is now available on GitHub

The new script adds the following features:

  1. It now runs as a daemon.
  2. Exceptions generated by cl-acltool are caught and handled
  3. Rules are compiled asynchronously, reducing response time of REST calls
  4. Updates are batched, supporting hundreds of operations per second

The script doesn’t provide any security, which may be acceptable if access to the REST API is limited to the management port, but is generally unacceptable for production deployments.

Fortunately, Cumulus Linux is a open Linux distribution that allows additional software components to be installed. Rather than being forced to add authentication and encryption to the script, it is possible to install additional software and leverage the capabilities of a mature web server such as Apache. The Continue reading

Google sees success with balloon, airplane Internet

Google’s ambitious efforts to bring balloon and aircraft-borne connectivity to underserved areas of the globe are pushing past some key milestones and the company expects a public launch in a few years.Both projects have captured the imagination of many for their ability to beam Internet signals from platforms high up in the sky to areas without cellular networks, but represent significant engineering challenges for Google—just the kind of thing the company likes, said Sundar Pichai, a senior vice president at Google, speaking at Mobile World Congress in Barcelona.The oldest and perhaps best known of the two projects, Project Loon, seeks to use balloons flying around 20 kilometers (65,000 feet) above the Earth to deliver Internet signals. The company’s first experiments used a proprietary WiFi signal but that’s since changed to LTE cellular signals.To read this article in full or to leave a comment, please click here

Google sees success with balloon, airplane Internet

Google’s ambitious efforts to bring balloon and aircraft-borne connectivity to underserved areas of the globe are pushing past some key milestones and the company expects a public launch in a few years. Both projects have captured the imagination of many for their ability to beam Internet signals from platforms high up in the sky to areas without cellular networks, but represent significant engineering challenges for Google—just the kind of thing the company likes, said Sundar Pichai, a senior vice president at Google, speaking at Mobile World Congress in Barcelona. The oldest and perhaps best known of the two projects, Project Loon, seeks to use balloons flying around 20 kilometers (65,000 feet) above the Earth to deliver Internet signals. The company’s first experiments used a proprietary WiFi signal but that’s since changed to LTE cellular signals.To read this article in full or to leave a comment, please click here

SNL roasts Net Neutrality phonies

Net neutrality, even after last week's big FCC vote in favor of it, continues to be a term many don't quite get. SNL took advantage of that this past weekend to spoof tech pundits, and even works a Vint Cerf character into the mix. (FYI, NSFW).MORE: Most Memorable SNL Tech Skits & Bits To read this article in full or to leave a comment, please click here

Microsoft, Intel team on low-cost Windows 10 phones

Right now you can't buy Windows-based handsets that run on Intel chips, but that will change later this year with the mobile version of Windows 10. Microsoft's recent Windows Phone OSes worked only with ARM-based processors from Qualcomm. Though Windows 10 will also work on ARM systems, compatibility with Intel x86 chips breaks that exclusivity. The Windows 10 mobile OS will run on handsets and so-called phablets powered by Intel's upcoming Atom X3 chips, code-named Sofia, announced by the chip maker at the Mobile World Congress trade show. Devices with the X3 chips will be priced from under US$75 to $249. The X3 chips will also be offered in Android handsets.To read this article in full or to leave a comment, please click here

Intel rethinking tablets with new Atom X5, X7 chips

Intel hopes to reignite excitement in tablets with its new Atom chips code-named Cherry Trail, which will be in devices in a few months. The chipmaker wants to eliminate tablet usage hassles like fumbling for wires and typing in passwords with its new Atom X5 and X7 chips, which are being announced at the Mobile World Congress trade show in Barcelona. Tablets with Cherry Trail will be priced from US$119 to $499, and have screen sizes from 7 to 10.1 inches. Asus, Lenovo, Acer, Dell, Toshiba and Hewlett-Packard will ship devices with Atom X5 or X7 chips in the first half this year.+ See our full coverage of MWC 2015 +To read this article in full or to leave a comment, please click here

From Microsoft: Two new Lumia smartphones to upgrade later to Windows 10

BARCELONA -- Microsoft today announced two new Lumia smartphones running Windows Phone 8.1, which will be upgraded to the cross-platform Windows 10 later in the year. The company gave news media at Mobile World Congress a brief glimpse of how Windows 10 apps, such as an Excel spreadsheet, maps and Outlook email, look on a smartphone display. Windows 10 is currently in a publicly available preview version and will be ready for official release later in 2015. The new phones are the Lumia 640, with a 5-in. display, and the Lumia 640 XL with a 5.7-in. screen. The larger device ships in March and the smaller one in April, and both AT&T and T-Mobile will offer them. Pricing was estimated at about $178 for the Lumia 640 on LTE and about $245 for the Lumia 640 XL on LTE, but pricing will vary by market and operator, Microsoft said.To read this article in full or to leave a comment, please click here

Google confirms carrier plans, details coming soon

Google has confirmed for the first time that it plans to offer connectivity directly to mobile users in the U.S., but a senior executive downplayed the competition it would be to major U.S. cellular carriers.Several reports have said the company is preparing a service that would be offered across an existing cellular network under a Google brand—a so-called “mobile virtual network operator” or MVNO. But the reports hadn’t been confirmed until Sundar Pichai, the company’s senior vice president, spoke at Mobile World Congress in Barcelona on Monday.“You’ll see us announce it in the coming months,” said Pichai.Pichai said it won’t be a full-service mobile network in competition with existing carriers.To read this article in full or to leave a comment, please click here

Google confirms carrier plans, details coming soon

Google has confirmed for the first time that it plans to offer connectivity directly to mobile users in the U.S., but a senior executive downplayed the competition it would be to major U.S. cellular carriers. Several reports have said the company is preparing a service that would be offered across an existing cellular network under a Google brand—a so-called “mobile virtual network operator” or MVNO. But the reports hadn’t been confirmed until Sundar Pichai, the company’s senior vice president, spoke at Mobile World Congress in Barcelona on Monday.+ See our full coverage of MWC 2015 +To read this article in full or to leave a comment, please click here

Finnish companies join forces to build secure OS for smartphones and tablets

Finnish companies Jolla and SSH Communications Security are counting on their European origins to help sell a secure mobile operating system they are co-developing.The need for more secure mobile communications has been apparent ever since former U.S. government contractor Edward Snowden made his revelations about National Security Agency (NSA) snooping.SSH is best known for the Secure Shell encrypted communications protocol invented by the company’s founder Tatu Ylönen. Jolla, founded in 2011 by a group of former Nokia employees, sells a smartphone running its open Sailfish OS, and will start shipping its first tablet running the OS next quarter.To read this article in full or to leave a comment, please click here

Finnish companies join forces to build secure OS for smartphones and tablets

Finnish companies Jolla and SSH Communications Security are counting on their European origins to help sell a secure mobile operating system they are co-developing. The need for more secure mobile communications has been apparent ever since former U.S. government contractor Edward Snowden made his revelations about National Security Agency (NSA) snooping. SSH is best known for the Secure Shell encrypted communications protocol invented by the company’s founder Tatu Ylönen. Jolla, founded in 2011 by a group of former Nokia employees, sells a smartphone running its open Sailfish OS, and will start shipping its first tablet running the OS next quarter.To read this article in full or to leave a comment, please click here

Finnish companies join forces to build secure OS for smartphones and tablets

Finnish companies Jolla and SSH Communications Security are counting on their European origins to help sell a secure mobile operating system they are co-developing. The need for more secure mobile communications has been apparent ever since former U.S. government contractor Edward Snowden made his revelations about National Security Agency (NSA) snooping. SSH is best known for the Secure Shell encrypted communications protocol invented by the company’s founder Tatu Ylönen. Jolla, founded in 2011 by a group of former Nokia employees, sells a smartphone running its open Sailfish OS, and will start shipping its first tablet running the OS next quarter.To read this article in full or to leave a comment, please click here

Finnish companies join forces to build secure OS for smartphones and tablets

Finnish companies Jolla and SSH Communications Security are counting on their European origins to help sell a secure mobile operating system they are co-developing. The need for more secure mobile communications has been apparent ever since former U.S. government contractor Edward Snowden made his revelations about National Security Agency (NSA) snooping. SSH is best known for the Secure Shell encrypted communications protocol invented by the company’s founder Tatu Ylönen. Jolla, founded in 2011 by a group of former Nokia employees, sells a smartphone running its open Sailfish OS, and will start shipping its first tablet running the OS next quarter.To read this article in full or to leave a comment, please click here

Seamless MPLS Architecture

Seamless MPLS architecture can be used to create very large  scale MPLS network, reduces operational touch points for service creation, reduces overall complexity and enable flexible service creation points in the Service Provider networks. Seamless mpls architecture best suited for the very large scale service provider networks which has 10s or 100s of thousands access nodes, very… Read More »

The post Seamless MPLS Architecture appeared first on Network Design and Architecture.

Orientation

Quick — can you OODA? Last week we talked about the general idea behind the OODA loop; this week we’ll cover the last three steps and wrap up.

Orient is the second step: once you’ve made a set of observations, you need to decide what it is you’re actually observing. To help this make sense, let’s take a look at a simple optical illusion — you might have seen it before.

perfectsquares

Do the blue squares look square, or… ?? If you’re like most people, the squares don’t look square at all — but they are. Remember the blue or gold dress? In both of these situations, we face the same sort of problem: our ability to perceive is often influenced by the context.

This doesn’t, as some people try to say, mean that our senses are all just a jumbled up mess, and the entire world is disconnected from our brains — you must be careful in life not to make the hard or odd case the rule by which all other cases are measured. Every measurement system has its limits; that doesn’t mean the measurement is useless or generally untrustworthy.

So what we must do, as network engineers, is to Continue reading

Nokia, DoCoMo test high-frequency mobile with an eye on 5G

Nokia Networks and Japanese carrier NTT DoCoMo are testing networks using extremely high frequencies that may someday deliver multi-gigabit speed to mobile devices.The companies’ technology trial is using 70GHz radios that today are about the size of a carry-on suitcase. Eventually, the technology will shrink down to about 5 millimeters across to fit in a mobile device.So-called millimeter-wave radios can pack a lot of data into a narrow beam, and the frequencies they’re designed to use aren’t in high demand these days. That’s why Nokia and other vendors see this technology as a key part of the future 5G mobile standard coming in 2020.To read this article in full or to leave a comment, please click here

Nokia, DoCoMo test high-frequency mobile with an eye on 5G

Nokia Networks and Japanese carrier NTT DoCoMo are testing networks using extremely high frequencies that may someday deliver multi-gigabit speed to mobile devices. The companies’ technology trial is using 70GHz radios that today are about the size of a carry-on suitcase. Eventually, the technology will shrink down to about 5 millimeters across to fit in a mobile device. So-called millimeter-wave radios can pack a lot of data into a narrow beam, and the frequencies they’re designed to use aren’t in high demand these days. That’s why Nokia and other vendors see this technology as a key part of the future 5G mobile standard coming in 2020.To read this article in full or to leave a comment, please click here

Nokia, DoCoMo test high-frequency mobile with an eye on 5G

Nokia Networks and Japanese carrier NTT DoCoMo are testing networks using extremely high frequencies that may someday deliver multi-gigabit speed to mobile devices. The companies’ technology trial is using 70GHz radios that today are about the size of a carry-on suitcase. Eventually, the technology will shrink down to about 5 millimeters across to fit in a mobile device. So-called millimeter-wave radios can pack a lot of data into a narrow beam, and the frequencies they’re designed to use aren’t in high demand these days. That’s why Nokia and other vendors see this technology as a key part of the future 5G mobile standard coming in 2020.To read this article in full or to leave a comment, please click here

The Upload: Your tech news briefing for Monday, March 2

Samsung challenges Google, Apple on paymentsThe world’s biggest maker of Android phones launched a major challenge to Google Wallet on Sunday: it’s going to start a rival phone-based payment system beginning in the U.S. in the coming months. Samsung Pay will work first on the new Galaxy S6 and relies on the contactless NFC payment infrastructure also used by competitors—but with the added advantage that it will also be able to communicate with traditional magnetic card payment terminals.NXP buys Freescale to build a bigger chip companyTo read this article in full or to leave a comment, please click here

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