Stand Up for Strong Security

Certain factions within the US Congress and the FBI are insisting on the government requiring US technology companies to grant the government special access to devices and cryptographic measures. In essence, they are asking for US technology to be insecure by design. Adding a backdoor for US government agencies is possible but there are serious …

Hardening Postfix

While there are plenty of good (and not so good) anti-spam solutions available, most of them cost a bit of money in terms of purchasing and licensing fees. Even without a dedicated appliance, there are several ways you can harden the Postfix MTA against spam and other internet nasties. In this article, we’re going to …

Using blacklists with iptables

If you have any kind of system connected to the Internet, you are no doubt aware that no matter how small or unimportant it might seem, it is frequently probed, tested or subject to various attempts at abuse. These attacks come from so many malicious hosts that it is impossible to keep track by hand. …

Another letter from Ivo

Dutch minister of Justice Ivo Opstelten is certainly being a busy boy. Just a few days have passed since his last letter and now he has written another one, equally worrying or perhaps more so. In short, he is suggesting in an as yet not public letter that the Dutch police should have the right …