The Use of Graph Database in Network Complexity Analysis

How Does Internet Work - We know what is networking

Computer networks are probably the best example of graphs these days. I started therefore to consider graph database as an excellent tool for storing experimental results of my networking complexity analysis method. It’s a project that I’m doing (starting to do) in which I will try to create a better method of computer network complexity audit by combining few of already existing methods and by additionally enhancing some of their algorithms to get more precise results out of the whole thing. The idea is that most of network complexity measurement mechanism rely strongly on graph theory in which most metrics

The Use of Graph Database in Network Complexity Analysis

5 things to think about for industrial IoT readiness

Industrial IoT explodingImage by ThinkstockThe number of connected devices is growing exponentially. In fact, current estimates from IDC Research predict IoT spending will reach $1.29 trillion by 2020. Although many of these are consumer devices (such as Fitbits or smartphones), the presence of IoT devices in industrial settings is skyrocketing as well, with manufacturing forecasted to be the industry making the largest investment in IoT. With this increased connectivity, the Industrial Internet of Things (IIoT) offers exciting possibilities for transforming many different industries – from industrial automation and manufacturing, to oil & gas and building security. By utilizing the IIoT, industrial companies can leverage technologies like big data analytics to optimize operations, improve efficiency and generate insights that can increase profitability and competitive advantage.To read this article in full or to leave a comment, please click here

10 Most Popular articles of 2016 on orhanergun.net and statistics

Below is the Google Analytics page views for the articles between January 1st 2016 and January 1st 2017. I didn’t include Home page , CCDE Course and the CCDE E-book pages but just the technical articles. If you haven’t looked at some of those yet, I recommend definitely read them now.   BGP Route Reflector […]

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A Glimmer of Light Against Dark Silicon

Moore’s Law has been the driving force behind computer evolution for more than five decades, fueling the relentless innovation that led to more transistors being added to increasingly smaller processors that rapidly increased the performance of computing while at the same time driving down the cost.

Fifty-plus years later, as the die continues to shrink, there are signs that Moore’s Law is getting more difficult to keep up with. For example, Intel – the keeper of the Moore’s Law flame – has pushed back the transition from 14-nanometers to 10nm by more than a year as it worked through issues …

A Glimmer of Light Against Dark Silicon was written by Jeffrey Burt at The Next Platform.

Adding Metadata to the Arista vEOS Vagrant Box

This post addresses a (mostly) cosmetic issue with the current way that Arista distributes its Vagrant box for vEOS. I say “mostly cosmetic” because while the Vagrant box for vEOS is perfectly functional if you use it via Arista’s instructions, adding metadata as I explain here provides a small bit of additional flexibility should you need multiple versions of the vEOS box on your system.

If you follow Arista’s instructions, then you’ll end up with something like this when you run vagrant box list:

arista-veos-4.18.0    (virtualbox, 0)
bento/ubuntu-16.04    (virtualbox, 2.3.1)
centos/6              (virtualbox, 1611.01)
centos/7              (virtualbox, 1611.01)
centos/atomic-host    (virtualbox, 7.20170131)
coreos-stable         (virtualbox, 1235.9.0)
debian/jessie64       (virtualbox, 8.7.0)

Note that the version of the vEOS box is embedded in the name. Now, you could not put the version in the name, but because there’s no metadata—which is why it shows (virtualbox, 0) on that line—you wouldn’t have any way of knowing which version you had. Further, what happens when you want to have multiple versions of the vEOS box?

Fortunately, there’s an easy fix (inspired by the way CoreOS distributes their Vagrant box). Just create a file with the Continue reading

Incident report on memory leak caused by Cloudflare parser bug

Last Friday, Tavis Ormandy from Google’s Project Zero contacted Cloudflare to report a security problem with our edge servers. He was seeing corrupted web pages being returned by some HTTP requests run through Cloudflare.

It turned out that in some unusual circumstances, which I’ll detail below, our edge servers were running past the end of a buffer and returning memory that contained private information such as HTTP cookies, authentication tokens, HTTP POST bodies, and other sensitive data. And some of that data had been cached by search engines.

For the avoidance of doubt, Cloudflare customer SSL private keys were not leaked. Cloudflare has always terminated SSL connections through an isolated instance of NGINX that was not affected by this bug.

We quickly identified the problem and turned off three minor Cloudflare features (email obfuscation, Server-side Excludes and Automatic HTTPS Rewrites) that were all using the same HTML parser chain that was causing the leakage. At that point it was no longer possible for memory to be returned in an HTTP response.

Because of the seriousness of such a bug, a cross-functional team from software engineering, infosec and operations formed in San Francisco and London to fully understand Continue reading

Stop using SHA1: It’s now completely unsafe

Security researchers have achieved the first real-world collision attack against the SHA-1 hash function, producing two different PDF files with the same SHA-1 signature. This shows that the algorithm's use for security-sensitive functions should be discontinued as soon as possible.SHA-1 (Secure Hash Algorithm 1) dates back to 1995 and has been known to be vulnerable to theoretical attacks since 2005. The U.S. National Institute of Standards and Technology has banned the use of SHA-1 by U.S. federal agencies since 2010, and digital certificate authorities have not been allowed to issue SHA-1-signed certificates since Jan. 1, 2016, although some exemptions have been made.To read this article in full or to leave a comment, please click here

Stop using SHA1: It’s now completely unsafe

Security researchers have achieved the first real-world collision attack against the SHA-1 hash function, producing two different PDF files with the same SHA-1 signature. This shows that the algorithm's use for security-sensitive functions should be discontinued as soon as possible.SHA-1 (Secure Hash Algorithm 1) dates back to 1995 and has been known to be vulnerable to theoretical attacks since 2005. The U.S. National Institute of Standards and Technology has banned the use of SHA-1 by U.S. federal agencies since 2010, and digital certificate authorities have not been allowed to issue SHA-1-signed certificates since Jan. 1, 2016, although some exemptions have been made.To read this article in full or to leave a comment, please click here

11 low-tech, decidedly cool cars

Retromobile 2017 Car ShowImage by Reuters/Benoit TessierOne of the true stellar classic car events on the world happened recently in Paris. “Retromobile” features hundreds of amazingly cool, some one of a kind models.  Here we’ll talk a look at 11 of the decidedly coolest – courtesy of Reuters.To read this article in full or to leave a comment, please click here

Google’s new AI aims to end abusive online comments using ‘Perspective’

The internet is a tough place to have a conversation. Abuse has driven celebrities and ordinary folks from social media platforms that are ill-equipped to deal with it, and some publishers have switched off comment sections.That’s why Google and Jigsaw (an early stage incubator at Google parent company Alphabet) are working on a project called Perspective. It uses artificial intelligence to try to identify toxic comments, with an aim of reducing them. The Perspective API released Thursday will provide developers with a score of how likely users are to perceive a comment as toxic. In turn, that score could be used to develop features like automatic post filtering or to provide users with feedback about what they're writing before they submit it for publication. Starting on Thursday, developers can request access to Perspective's API for use in projects they're working on, and Jigsaw will approve them on a rolling basis.To read this article in full or to leave a comment, please click here

How to institute an agile IT outsourcing process

Traditionally, IT organizations have spent six months to a year or more on the IT outsourcing transaction process, finding the right providers and negotiating a suitable contract. But as IT services — and, increasingly, as-a-service— deals have gotten shorter, that lengthy process may no longer make sense.Industry advisors and consultants have debated the potential benefits of speedier sourcing for several years. In today’s rapidly changing business and technology landscape, it may become an imperative. But an effective outsourcing engagement demands more than just an accelerated version of the traditional IT services transaction process.To read this article in full or to leave a comment, please click here

5G will help autonomous cars cruise streets safely

Years from now, your first autonomous car may have a lot of help from 5G wireless networks to navigate the streets safely.5G will be as important to autonomous cars as 4G has been to mobile phones. The technology will help cars change lanes, recognize signals and draw up accurate maps. 5G will also help vehicles communicate in order to scope out road and weather conditions.For collision avoidance, 5G will connect cars to cloud services for object recognition. It will also provide a constant link to  live TV for backseat passengers to enjoy. Many 5G capabilities for autonomous cars will be on display at the Mobile World Congress trade show in Barcelona, where Intel and Qualcomm will be showing off their latest technologies.To read this article in full or to leave a comment, please click here

4 things we expect from Mobile World Congress 2017

Mobile World Congress, the Davos of wireless technology, is happening next week in Barcelona, and it’s going to be a particularly important year, as the mobile landscape readies itself for a couple of fairly major shifts.Here’s our quick look ahead to next week in sunny Spain and the four main points we expect from the MWC show.5G, or at least previews of it There’s been a big school of 5G press releases floating into our inboxes here in tech media just ahead of MWC (i.e., “Verizon plans 5G wireless trial service in 11 cities this year”), and it’s no real surprise – next-generation mobile networks are going to do a lot more than just boost speeds. They’ll also connect large numbers of devices – not just phones and tablets and laptops – to each other.To read this article in full or to leave a comment, please click here

4 things we expect from Mobile World Congress 2017

Mobile World Congress, the Davos of wireless technology, is happening next week in Barcelona, and it’s going to be a particularly important year, as the mobile landscape readies itself for a couple of fairly major shifts.Here’s our quick look ahead to next week in sunny Spain and the four main points we expect from the MWC show.5G, or at least previews of it There’s been a big school of 5G press releases floating into our inboxes here in tech media just ahead of MWC (i.e., “Verizon plans 5G wireless trial service in 11 cities this year”), and it’s no real surprise – next-generation mobile networks are going to do a lot more than just boost speeds. They’ll also connect large numbers of devices – not just phones and tablets and laptops – to each other.To read this article in full or to leave a comment, please click here

How to assess security automation tools

This column is available in a weekly newsletter called IT Best Practices.  Click here to subscribe.  During my recent trip to Tel Aviv to attend CyberTech 2017, I had a one-on-one conversation with Barak Klinghofer, co-founder and CTO of Hexadite. He gave me a preview of an educational presentation he was to give two weeks later at the RSA Conference. His insight is worth repeating for anyone looking to add automation tools to their security toolset.As I saw at CyberTech, and I’m sure was the case at RSA, the hottest topics were security automation, automated incident response and security orchestration. These can be confusing terms, as every vendor describes them a little bit differently.To read this article in full or to leave a comment, please click here

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