Parsing Wave Files in Python
It sounds like a simple task – grab some WAVE audio files and parse them so we can read the metadata and samples in Python. I mean, the WAVE (really, RIFF with WAVE) format...
Category: IT
Redux Sagas – Event Driven Programming is Back!
Let’s go back in time about 15 years. VB6 is the not so much the hotness but a go-to option for Windows desktop applications. Heck, I was at high school finding out the hard...
SDN – Driving Cumulus/Mellanox (Nvidia) Networks from TFS
I’m not going to win any prizes for “catchiest” title but it’s something we’ve been beavering away with at work. A new datacentre network configured through a CI pipeline. At the moment, the initial...
Naively Detecting Pivots with NetFlow
The experiment started with a simple question – can you detect interesting behaviour with only NetFlow data? There are numerous tools on the market that can do this will full network taps but that’s...
Building a (Very) Low Power FM Transmitter with HackRF One
Software defined radio has been a thing for a few years now but the sheer cost of equipment meant put transmission out of reach. There’s even a post on this very site from a...
Grabbing Your iRules by the TesTcl
Ok, I’ll admit, it’s hard to pass an opportunity to joke about a name such as TesTcl. Much like it’s namesake, it’s a serious issue. My current employer makes use of F5 load balancers....
Radio Station Mobile Apps – My Experience
It’s funny, I speak to developers and occasionally (jokingly!) get brushed off as an unknowing infrastructure support type. That’s despite writing code for over 20 years, a Computer Science degree that imprinted the “Gang...
The Frustrating World of Writing Radio Station Skills for Alexa
Writing a radio station skill for Alexa should be relatively simple. The minimal viable product is streaming audio plays when the user asks for it and maybe we can give some now playing information...
Polling Elasticsearch Queries through SNMP
We’ve got a technical problem that sounds simple to fix – what traffic levels are we seeing from a specific set of sources? This traffic passes through a firewall (Sonicwall) appliance and even as...
VXLAN Puppet Module
If you’ve done any work with OpenStack or VMware NSX, you’ve likely come across VXLAN. It’s an encapsulation protocol that allows you to wrap layer 2 traffic in unicast UDP packets for traversal over...