Docker volume as NFS client
You'll learn how to use an NFS share as Docker volume
Restore a deleted file from git commit history
In a recent blog post I had to recover a deleted file from a public git repository to share with you. Today I will show you how it's done. In this particular case, I needed a file with old UDEV rules. I knew the name and location of the file [...]
What is an SPF record? And why use them?
An SPF record is basically a DNS record of the TXT type, which contains information about who may send email from your domain. It is used to avoid spoofing and spam. So how does it work? Basically, when a (decent) email server receives an email that is supposedly originating from [...]
Securing your website further with Certification Authority Authorization (CAA)
Don't let just "anyone" issue a certificate for your domain! If you run your website, you probably secure it with HTTPS (if not, you really should). And if you're techy and smart, you're using Let's Encrypt to do so. This would mean that Let's Encrypt is your CA (Certificate Authority). [...]
Quickly harden Apache 2 by disabling insecure SSL/TLS and only allowing strong ciphers
Just a quick one to improve things! Beginning January 2020, SSLLabs.com will give you a grade B if you still have TLS 1.0 or 1.1 enabled, as it's considered insecure. The following is an example warning you might see: Screenshot of warning on ssllabs.com So let's disable that weak stuff, [...]
Self-Hosting Threema Web
If you use Threema, you probably know of the "Threema Web" feature.But did you know it's open source? So what's Threema Web? It's basically a web application, that connects with your phone and allows you to chat on your desktop through the browser. You can see all your chats in [...]
Virtualization on Windows
Now that we covered virtualization on Mac, let's go over to Windows! Microsoft Hyper-V If you have Windows 10 Pro or better (includes Education and Enterprise), then you already have a native virtualization option on board! To enable it, simply open a PowerShell as administrator and type in following command: [...]
Linux full-disk-encryption
Just wanted to share a one-liner on how to encrypt a device,partition or volume with cryptsetup (dm-crypt/luks)and options to get you started! The idea is simple: You create a crypto container on a disk/partition/volume/file/whatever, you then unlock that container, and then mount that container to a folder. When you're done [...]
OpenVPN clients: A list
Here's a list of OpenVPN clients I recommend for various platforms. Windows Use the official open source community client. https://openvpn.net/community-downloads/ Mac Use the open source Tunnelblick client which is both OpenVPN and GUI in one app. https://tunnelblick.net/ Linux Use your distribution package or compile OpenVPN from source. https://wiki.debian.org/OpenVPNhttps://fedoraproject.org/wiki/Openvpnhttps://wiki.archlinux.org/index.php/OpenVPN Android I [...]
HSTS: HTTP Strict Transport Security
What is HSTS and do I want to enable it?If you are a website owner or admin, keep reading to know more! Imagine you are browsing to your online banking page. You are redirected to HTTPS automatically every time, you sign in and do your business privately and all is [...]