IPsec & path MTU discovery: feature or vulnerability?
IPsec is a well-established technology for building VPN tunnels between sites. Path MTU discovery (PMTUD) is a feature that provides visibility into intermediate MTU along the path. Is it possible to use the two features simultaneously? Sure. Should the two features be used simultaneously? That’s the case I would like to cover in this article.
Bell’s inequality
I am fascinated by the way Chris Bernhardt uncovers quantum computing in his book. Explanation for Bell’s inequality is one of the gems in my humble opinion – just try to find a source that speaks human and not formulas. In this article I’d like to retell it so if you’re already skimming through the book – don’t bother reading further.
Quantum teleportation: does it mean faster-than-light communication?
Given a pair of entangled qubits, one might think at the first glance that it’s possible to transfer information at an instant – faster than light. Unfortunately, you’ll still need a classic channel to sync the results.
Networking and IT 