SWITCH Security-Blog

SWITCH-CERT IT-Security Blog


The November/December 2020 issue of our SWITCH Security Report is available!

Dear Reader!

A new issue of our bi-monthly SWITCH Security Report is available!

The topics covered in this report are:

  • Choose your team carefully – hackers use fake MS Teams updates to attack networks, especially those of educational institutions
  • Audacious coronavirus relief phishing delivers an extra malware ‘bonus’ on request and creates a challenge for BEC
  • Stopping the attempt to stop online hate speech?
  • Close the gates before it’s too late: what Sneakers and the Internet of Things have in common

The Security Report is available in both English and German.

»»  Download the English report.     »»  Download the German report.


2 Comments

DNSSEC signing your domain with BIND 9.16

BIND 9.16 has improved DNSSEC support to the point where it can (finally) be called simple to use. This is excellent news for DNS administrators because it means there are now several options (viable alternatives being Knot DNS or PowerDNS) which make DNSSEC simple to deploy.

Six years ago we wrote a blog post about BIND 9.9 and its new in-line signing support. This article got a lot of views but at some point we had to put a warning message on the blog post stating vaguely that we would not recommend the method described anymore. The main reason was that DNSSEC with BIND 9.9 still contained many manual steps which could not be configured in named.conf. Especially key roll-overs caused headaches for administrators. If you cannot upgrade to BIND 9.16 the old blog post might still be useful. But in this case, we recommend to omit key roll-overs altogether.

However, now that we have BIND 9.16, you can just make some configuration changes to named.conf and it’s all done. Now let’s take a closer look on how you can enable DNSSEC for your domain name.

OS Setup

We used Debian 10 (aka buster) which comes with BIND 9.11 at the time of writing. We used the BIND9 packages provided by ISC, who offer BIND 9.16 in the “BIND 9 Stable” repository. Please head over to ISC Packages for BIND 9 for instructions on how to use the ISC packages directly.

Once you have added the ISC BIND 9 Stable repository we install bind9, bind9 utils and the bind documentation:

apt-get install bind9 bind9-dnsutils bind9-doc

You have now a running bind9 instance. You can check its running state with systemctl:

systemctl status bind9

Continue reading