Making this blog reachable over IPv6
It’s not difficult to make your site available over IPv6, but IPv6 does work differently from IPv4. This article describes what I did to make my site available over IPv6.
Continue readingCategory: Linux
On Domino thread IDs and Linux/Windows process IDs
A small tip that can make troubleshooting in Domino a lot easier. Domino thread IDs contain the PID of the Domino process!
Continue readingPodman 4 – important changes
Podman 4 includes some major changes to the networking stack (the responsible service is called Netavark and aardvark for dns resolution). These changes are incorporated into podman-compose, but this comes with a major caveat, which I cover in this post.
Continue readingProtecting your Domino container with fail2ban
Your Domino server could be victim to brute force attacks to guess user’s passwords and subsequently use your Domino server a spam gateway. Fail2ban is a elegant way to stop these brute force attacks. If you use Domino containers, you might have to do some extra configuration
Continue readingNginx as reverse proxy on CentOS 9 Stream – a problematic combination
OpenSSL introduced a new feature in OpenSSL 3.0, which doesn’t work well with older versions of nginx. Older versions, like the default version of nginx that comes with CentOS 9 Stream…
Continue readingChoosing my new server’s operating system
When installing a new Linux server, there are a lot of operating systems to choose from. For my new installation, I chose CentOS 9 Stream, but that doesn’t seem a very popular choice. I describe why I went with it anyway.
Continue readingBAT – the intelligent cat
Every now and then I run into a handy little tool which makes life on the command line just a bit easier. This is one of them: bat
Continue readingClosing the json-leak in WordPress
Wordpress by default doesn’t protect the JSON API. This API however does give the possibility to get to see all parts of your Wordpress site, including parts which you maybe didn’t want to show to the public. This article shows how to protect this API.
Continue readingExtending disks in CentOS
Increasing your file systems in Linux is not hard, but I couldn’t find a concise guide applicable to the general situation for a Domino server. So I created one
Continue readingReplacing Docker with Podman – first steps
As companies like Red Hat are starting to abandon Docker as the container platform, daemon etc. of choice, I decided it was time to take a look at podman, the supposedly “drop-in replacement” of Docker in RHEL. This wasn’t an easy ride. This article tells about my first steps of replacing Docker as my container platform with Podman for the containers I’m running privately (including this blog)
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