News Category: Networking

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Dovecot email
Part 2 in this tutorial shows how to use Dovecot to move messages off your Postfix server and into your users' email inboxes.

Building an Email Server on Ubuntu Linux, Part 2

In part 1, we installed and tested the Postfix SMTP server. Postfix, or any SMTP server, isn't a complete mail server because all it does is move messages between SMTP servers. We need Dovecot to move messages off your Postfix server and into your users' email inboxes. Dovecot supports the two...
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IBM Building Blockchain Ecosystem

IBM believes blockchain technology, with its capability to create an essentially immutable ledger of digital events, will alter the way whole industries conduct transactions. To make that happen, Big Blue asserts, requires a complete ecosystem of industry players working together. To that end, IBM...
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The New Role of Assurance for Virtualized Networks

For as long as any of us can remember, fulfillment and assurance were two independent processes, mostly because they were conceived, operated and purchased by separate departments. As Alfred D. Chandler demonstrated in his classic book “Strategy and Structure,” operations and even business...
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Old Kernel Code Execution Bug Patched

A critical, local code-execution vulnerability in the Linux kernel was patched more than a week ago, continuing a run of serious security issues in the operating system, most of which have been hiding in the code for years. Details on the vulnerability were published Tuesday by researcher Philip...
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What’s New with Xen Project Hypervisor 4.8?

I’m pleased to announce the release of the Xen Project Hypervisor 4.8. As always, we focused on improving code quality, security hardening as well as enabling new features. One area of interest and particular focus is new feature support for ARM servers. Over the last few months, we’ve seen a surge...
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There’s a New DDoS Army, and It Could Soon Rival Record-Setting Mirai

For almost three months, Internet-of-things botnets built by software called Mirai have been a driving force behind a new breed of attacks so powerful they threaten the Internet as we know it. Now, a new botnet is emerging that could soon magnify or even rival that threat. The as-yet unnamed botnet...
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Open Networking Summit
The Linux Foundation is now seeking business and technical leaders to speak at Open Networking Summit 2017. Submit a talk to speak in one of our five new tracks for 2017 and share your vision and expertise. The deadline for submissions is Jan. 21, 2017.

The Linux Foundation Seeks Technical and Business Speakers for Open Networking Summit 2017

Help shape the future of open networking! The Linux Foundation is now seeking business and technical leaders to speak at Open Networking Summit 2017. On April 3-6 in Santa Clara, CA, ONS will gather more than 2,000 executives, developers and network architects to discuss innovations in networking...
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Network outage
Mark Collier, COO of the OpenStack Foundation, creating a network outage during a keynote demo at the OpenStack Summit in Barcelona.

How Virtualized Networks Will Save Us From Dropped Calls

We’ve all been the victim of a dropped mobile phone call and know how frustrating it can be. However, virtualized networks provide network operators with powerful tools to detect and recover from network disruptions, or “faults,” that can drop calls for thousands of subscribers simultaneously. The...
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What's New in OpenStack in 2016: A Look at the Newton Release

OpenStack is on a six-month release cycle, with each release given a code name starting with consecutive letters of the alphabet. On October 7th, OpenStack Newton was released. Let's look at a few highlights from OpenStack's 2016 Newton release. In addition to the usual enormous number of...
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Writing Your Own Ingest Processor for Elasticsearch

With Elasticsearch 5.0, a new feature called the ingest node was introduced. To quote the official documentation: You can use ingest node to pre-process documents before the actual indexing takes place. This pre-processing happens by an ingest node that intercepts bulk and index requests, applies...
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