Category Archives: Computing

Hardware, software, computer science and the rest

SSL Certificate Agility with Postfix

RFC 4492 and RFC 6460 introduced a number of TLS ciphers based on elliptic curve cryptography (ECC). While some of them are designed to work with RSA keys (which is what most encrypted website on the Internet are using at this point of time) … Continue reading

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DNSSEC for UK domains

I finally got around to enable DNSSEC (Domain Name System Security Extensions) for my primary domain zhadum.org.uk. This extra layer of protection makes it much harder to forge DNS entries for my domain. Following the steps in this tutorial the whole … Continue reading

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R.I.P. beaver

Yesterday Markus’s server beaver was switched off after more than eight years of service. We initially had a lot of trouble with this machine because of a dodgy PCI network card that caused complete system hangs due to PCI bus errors. It was … Continue reading

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