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a tech bläg!

A few months ago, my father bought himself a water purifier. It's a quite convenient and eco-friendly device which filters tap water, and optionally cools it and carbonates it, eliminating the need of buying bottled water entirely.

The company that sold it to him also sold him a stand-alone fau...

In the previous installment of the series, we analyzed the problem of near-istantaneous Internet connection failover without breaking existing connections for live video streaming. The solution we devised consists in setting up L2 GRE tunnels to a fixed gateway with a very reliable internet conn...

Last week, a friend of mine posed the interesting problem he was facing at the company he's working at of streaming video reliably from multiple commodity Internet connections. Since this is my kind of thing, I decided to give it a go.

After discussing the problem a bit, we came up with the foll...

Today I migrated an IPsec (with IKEv1) site-to-site setup from a pfSense machine to a Debian machine.

Since the pfSense machine was still the Internet gateway for the network, IKE and ESP packets still had to go through it. Now, I recalled something about firewalls not playing too nice with...

ZigBee is a stack of protocols intended to enable IoT devices to efforlessly form mesh networks and communicate with one another wirelessly. I've been fascinated with the ZigBee platform for a long time now, but I had always been put off by how corporate-y the technology looked like (and boy, I was...