Technology

For my money there is perhaps nothing more valuable than in situ kernel debugging. The ability to ask questions of any part of the kernel, on a live production system, without stopping or pausing anything, is quite frankly, amazing. One such avenue to in situ kernel debugging is the DTrace

Today, I wanted to take the time to dissect the statement I hear countless times: “Computers are all made out of logic gates”. From this we deduce that logic gates are very simple machines, analogous to light switches. This raises the question: how exactly do kind-of-light-switches come together to form

Network segmenting firewall, DHCP, DNS with Unbound, domain blocking and much more Introduction In this guide we’re going to take a look at how we can use cheap and “low end” hardware to build an amazing OpenBSD router with firewalling capabilities, segmented local area networks, DNS with domain blocking,

RSA is an intrinsically fragile cryptosystem containing countless foot-guns which the average software engineer cannot be expected to avoid. Weak parameters can be difficult, if not impossible, to check, and its poor performance compels developers to take risky shortcuts. Even worse, padding oracle attacks remain rampant 20 years after they