Network Performance: Packet Loss Vs. Delay
In this video, Tony Fortunato demonstrates how to take some basic latency measurements.
NextGenDC: Securing a Hybrid Cloud with Matthias Luft
Imagine you were asked to migrate some of the workloads running in your data center into a public (or managed) cloud. These workloads still have to access the data residing in your data center – a typical hybrid cloud deployment.
Next thing you know you have to deal with your (C)ISO and his/her usual concerns as well as the variety of articles on tech sites stating that "security is the biggest challenge of cloud adoption".
Read more ...Border Digital Safety for Journalists
The CPJ, the "Committee to Protect Journalists", offers some horrible advice [*] on Digital Security, especially when crossing the border.
The most important piece of advice I can give you is this: if somebody's life depends upon it, then no simple piece of advice, no infographic, is going to help you. You have to learn about cybersecurity enough to make intelligent decisions for yourself. You have to make difficult tradeoffs yourself. Anybody giving you simple advice or infographics is a charlatan.
So I thought I'd discuss what's wrong with the following infographic:
I. Passwords, managers, and two-factor
The biggest issue is don't reuse passwords across different accounts. If you do, when hackers breach one of your accounts, they breach all of them. I use a simple password for all the accounts I don't care about, then complex unique passwords for all my important accounts. I have to write them down on a piece of paper I've got hidden at home, because sometimes I forget them.
Password managers certainly help you have multiple strong passwords across many accounts. On the other hand, it puts all your eggs in one basket, and the police can grab them from the company.
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Configuring Cisco IOS XE With YDK and OpenDaylight
Now it’s time to turn our gaze to the godfather of YANG models and one of the most famous open-source SDN controllers, OpenDaylight. In this post I’ll show how to connect Cisco IOS XE device to ODL and use Yang Development Kit to push a simple BGP configuration through ODL’s RESTCONF interface.
Continue readingAdditional Insights on Shamoon2
IBM analysts recently unveiled a first look at how threat actors may have placed Shamoon2 malware on systems in Saudi Arabia. Researchers showcased a potential malware lifecycle which started with spear phishing and eventually led to the deployment of the disk-wiping malware known as Shamoon. […]Change All Your Passwords, Right Now!
by Steinthor Bjarnason, Senior ASERT Security Analyst & Roland Dobbins, ASERT Principal Engineer CloudFlare are probably best known as a DDoS mitigation service provider, but they also operate one of the largest Content Delivery Networks (CDNs) on the Internet. Many popular Web sites, mobile apps, […]3D Memory Sparks New Thinking in HPC System Design
Whether being built for capacity or capability, the conventional wisdom about memory provisioning on the world’s fastest systems is changing quickly. The rise of 3D memory has thrown a curveball into the field as HPC centers consider the specific tradeoffs between traditional, stacked, and hybrid combinations of both on next-generation supercomputers. In short, allocating memory on these machines is always tricky—with a new entrant like stacked memory into the design process, it is useful to gauge where 3D devices might fit.
While stacked memory is getting a great deal of airplay, for some HPC application areas, it might fall just …
3D Memory Sparks New Thinking in HPC System Design was written by Nicole Hemsoth at The Next Platform.
How to migrate existing applications to VMware NSX
This vendor-written tech primer has been edited by Network World to eliminate product promotion, but readers should note it will likely favor the submitter’s approach.
VMware’s NSX virtual network technology can help organizations achieve a greater level of network security, but how you approach deployment will vary depending on whether you are working with new applications (greenfield) or are moving applications from existing infrastructure to NSX (brownfield).
NSX’s micro-segmentation capabilities essentially allow placement of virtual firewalls around every server to control East-West traffic, thereby limiting lateral exploration of networks by hackers, and making it significantly easier to protect applications and data. It can enable a level of security that previously would have been prohibitively expensive and complicated using traditional hardware.
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