Brocade buying Ruckus Wireless for $1.2 billion

Networking hardware vendor Brocade announced today that it would add a wireless infrastructure club to its bag in the form of Ruckus Wireless, as part of a deal with a net value of $1.2 billion.The objective, according to Brocade’s public statement, is to broaden the company’s enterprise networking stable and boost profits, since wireless is a growth area. Like any merger of this type, the idea seems to be to offer a unitary set of products and services.+ALSO ON NETWORK WORLD: HTTP compression continues to put encrypted communications at risk + 12 powerful Windows 10 tools that hardcore PC enthusiasts will loveTo read this article in full or to leave a comment, please click here

Researchers reveal ‘Surreptitious Sharing on Android’ vulnerabilities

TU Braunschweig, Institute for Operating Systems and Computer Networks, Professors Dominik Schürmann and Lars Wolf are warning about a “Surreptitious Sharing” vulnerability which is present in many Android communication apps. Their pre-published research paper, Surreptitious Sharing on Android (pdf), is to be presented at the security conference GI Sicherheit 2016.To read this article in full or to leave a comment, please click here

Securing BGP: A Case Study (6)

In my last post on securing BGP, I said—

Here I’m going to discuss the problem of a centralized versus distributed database to carry the information needed to secure BGP. There are actually, again, two elements to this problem—a set of pure technical issues, and a set of more business related problems. The technical problems revolve around the CAP theorem, which is something that wants to be discussed in a separate post; I’ll do something on CAP in a separate post next week and link it back to this series.

The CAP theorem post referenced above is here.

securing-bgpBefore I dive into the technical issues, I want to return to the business issues for a moment. In a call this week on the topic of BGP security, someone pointed out that there is no difference between an advertisement in BGP asserting some piece of information (reachability or connectivity, take your pick), and an advertisements outside BGP asserting this same bit of information. The point of the question is this: if I can’t trust you to advertise the right thing in one setting, then why should I trust you to advertise the right thing in another? More specifically, if you’re using Continue reading

HTTP compression continues to put encrypted communications at risk

Security researchers have expanded and improved a three-year-old attack that exploits the compression mechanism used to speed up browsing in order to recover sensitive information from encrypted Web traffic.The attack, known as BREACH, takes advantage of the gzip/DEFLATE algorithm used by many Web servers to reduce latency when responding to HTTP requests. This compression mechanism leaks information about encrypted connections and allows man-in-the-middle attackers to recover authentication cookies and other sensitive information.The BREACH (Browser Reconnaissance and Exfiltration via Adaptive Compression of Hypertext) attack was first presented at the Black Hat USA security conference in August 2013 by security researchers Angelo Prado, Neal Harris and Yoel Gluck. While it theoretically affects all SSL/TLS ciphers, their version of the attack was most effective against connections encrypted with stream ciphers, such as RC4.To read this article in full or to leave a comment, please click here

How to Remove Duplicates in a Large Dataset Reducing Memory Requirements by 99%

This is a guest repost by Suresh Kondamudi from CleverTap.

Dealing with large datasets is often daunting. With limited computing resources, particularly memory, it can be challenging to perform even basic tasks like counting distinct elements, membership check, filtering duplicate elements, finding minimum, maximum, top-n elements, or set operations like union, intersection, similarity and so on

Probabilistic Data Structures to the Rescue

Probabilistic data structures can come in pretty handy in these cases, in that they dramatically reduce memory requirements, while still providing acceptable accuracy. Moreover, you get time efficiencies, as lookups (and adds) rely on multiple independent hash functions, which can be parallelized. We use structures like Bloom filters, MinHash, Count-min sketch, HyperLogLog extensively to solve a variety of problems. One fairly straightforward example is presented below.

The Problem

We at CleverTap manage mobile push notifications for our customers, and one of the things we need to guard against is sending multiple notifications to the same user for the same campaign. Push notifications are routed to individual devices/users based on push notification tokens generated by the mobile platforms. Because of their size (anywhere from 32b to 4kb), it’s non-performant for us to index Continue reading

The Network of 2020, what should CxOs expect?

Being an analyst I’m often asked to look ahead and predict what markets will look like in three to five years. Recently, I’ve been asked that if I were to design a next-generation network, which would be fully operational by 2020, what would it look like? The network industry has gone through more change in the past two years than it had gone through in the previous two decades so a network in 2020 will look significantly different than the networks of today.Predicting the future is obviously challenging but sometimes it’s better to look back to understand what the future will look like. In networking, there are many lessons we can learn from the last 20+ years where networks have evolved to be able to meet ongoing application and business needs. The innovation was obviously necessary but each time something new was bolted on to the network, there was a price to be paid. For example, WiFi being deployed as an overlay means having to manage two separate networks. Below are the top lessons learned from legacy networks over the past two decades.To read this article in full or to leave a comment, please click here

The Network of 2020, what should CxOs expect?

Being an analyst I’m often asked to look ahead and predict what markets will look like in three to five years. Recently, I’ve been asked that if I were to design a next-generation network, which would be fully operational by 2020, what would it look like? The network industry has gone through more change in the past two years than it had gone through in the previous two decades so a network in 2020 will look significantly different than the networks of today.Predicting the future is obviously challenging but sometimes it’s better to look back to understand what the future will look like. In networking, there are many lessons we can learn from the last 20+ years where networks have evolved to be able to meet ongoing application and business needs. The innovation was obviously necessary but each time something new was bolted on to the network, there was a price to be paid. For example, WiFi being deployed as an overlay means having to manage two separate networks. Below are the top lessons learned from legacy networks over the past two decades.To read this article in full or to leave a comment, please click here

Most powerful Internet of Things companies

Billions of devices, lots of opportunityThe Internet of Things (IoT) is still nascent, but growing quickly. Research firm IDC predicts it will become a $1.46 trillion international market by 2020, up from $700 billion last year. A trillion-dollar market means a lot of companies will want a slice. So who are the leaders of the IoT? We consulted with some of the leading analysts to find out. (Note: Companies are listed in alphabetical order.) To read this article in full or to leave a comment, please click here

Broken Configurations, Broken Windows

The “broken windows” theory states that small problems can become bigger ones unless dealt with quickly. The theory suggests that people infer the rules of behavior from what they observe. It suggests that working hard to clean up a neighborhood by making repairs like fixing broken windows will help to deter further vandalism. In this article, I will discuss how this theory applies to network configuration. -via Network Computing

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WiFi security 4 dummies

Customer site, their security policy for WiFi is an SSID with a secret PSK: the IT manager type the password on my PC to allow me to access the network. Maybe he’s not aware of my keylogger or that the password con be easily retrieved in cleartext. Let’s see how. Windows 10: retrieve the WiFi […]
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