Stuart Sheldon

Setting up IPv6 connectivity. Back in December `09, my company ACT USA, began testing IPv6. These tests quickly advanced to our production environment. Over the last six months, I have been in the process of setting up native IPv6 connectivity for all our data centers. This connectivity is based on the dual stack model. This article [...]

Exploit Against Adobe Flash and Adobe Reader. I thought I got this posted the beginning of the week, but I guess it slipped through the cracks… June 4, 2010, Adobe confirmed that a zero day exploit exists in it’s Flash Player,  Acrobat and Adobe Reader software. This bug effects all of it’s supported platforms, and has [...]

Ubuntu 10.04 – A quick review. The latest Ubuntu release has brought both praise and controversy to the boards and email lists. The debate regarding some of the visual changes, as well as the new services tied to Canonical, has caused a minor tremor through the open source community. But even with all the controversy, it’s [...]

Building Redundant Networks in Data Centers. I recently was asked to put together a brief web presentation on the different methods of creating redundant networks. I couldn’t think of a better place to put it, then right here on my blog. After all, I was overdue for a post anyways… What do I mean by redundant networks? A [...]

Amazon Brute Force SIP Attacks – Dave Michels Interviews Me. Shortly After my “SIP Brute Force Attack Originating From Amazon EC2 Hosts” post, Dave Michels interviewed me for an article Dark Side of the Cloud. This is that interview: Dave:   What do you believe the intent was of the attacks? Free long distance? Stu: Certainly free long distance [...]

SIP Brute Force Attack Originating From Amazon EC2 Hosts. I woke up Saturday morning to find strangely high network activity on some of our inbound connections. After a quick review, it turned out that most of the traffic was going into several of our hosted PBX systems. After a little more digging, I discovered that several [...]

A Microsoft Free Workplace in Six Months. Part 3 Well, I’ve been putting off updates on this for a few months, hoping that this project would begin moving forward again. It hasn’t, and for the life of me, I can not figure out why. The client has postponed the project due to a sudden surge in [...]