In: Security

Termination Fraud TNG
July 22, 2014

Honestly, fraudsters world wide are becoming more and more resourceful. From SIP based port knocking, automatic bot nets and targeted VoIP…

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Call analytics – Not Only for Large Enterprises
June 23, 2014

By Nir Simionovich (Originally published in Hebrew at Telecom News on 15 June 2014) Call analytics, sounds like something relatively simple and so…

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Building an Asterisk based business: Part III
April 6, 2014

In our previous posts we’ve examined a specific segment of the Asterisk Business eco-system – the long distance calling services (calling cards, callback, etc). While we’ve examined 2 specific models of operation, indicating the pros and cons of this business case – we shall now talk not about a specific case, but more about the requirements for building a specific type of voip business.

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Astricon 2013 Security Master Class Videos
November 21, 2013

Official Videos from Astricon 2013 Security Master Class have been posted Greenfield Technology not only organized these 2 days of security…

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Sometimes, Reality is far more scary…
October 13, 2013

During this years Astricon, Eric Klein and myself were entrusted with the task of helping to organize and execute the Asterisk…

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Announcing VoIP-On-Tap
October 3, 2013

We are happy to announce the foundation of the VoIP-On-Tap meetup group. You can register at http://www.meetup.com/voipontap/. The VoIP-On-Tap is an Israeli…

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Astricon time again
September 17, 2013

It is that time of year again when we start looking forward to Actually, we are running the Asterisk Security Master…

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Extreme Asterisk Cloud Performance – Part II
September 12, 2013

So, you are interested to know – how many calls can a server running on Amazon EC2 can actually handle? Well,…

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Presentations from AstriCON 2012
November 14, 2012

GreenfieldTech Presentations from AstriCON now available on our downloads page

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GreenfieldTech VOIP Security Audits
November 6, 2012

At Astricon in Atlanta I presented the initial results of our VOIP Security Audits, and we will be posting links to…

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