In the previous post I told you about the different modes a Huawei USB "internet stick" may have and what for. And since we want to make an SMS-Email gateway, we'll want to put our USB stick into modem mode so that it will act as USB serial device that [...]
I just wanted to share an interesting detail about those Huawei USB "internet sticks" you can buy to surf with your laptop on the go. They're quite versatile! You probably know the old school USB modems, that you plug in and your OS will ask for the SIM pin (if [...]
As you might know, Raspberry Pi 3/3+/4 all have a 64bit CPU but Raspbian (the official and default system for the Raspberry Pi) is 32-bit. In this guide I will show you how to switch the kernel to 64-bit, however I only recommend doing this with the latest Rasbian Lite [...]
Today we'll set up a DoH forwarder which will act as DNS server that will accept queries and forward them to a DNS over HTTPS provider of your choosing. This is useful when you want to run a local forwarder so that your ISP or attackers cannot spy on- or [...]
We can do this easily using curl, Gotify and a crontab one-liner (cronjob)! I'll show you how! This assumes you already have Gotify installed and set up, you can get the server and app for free on gotify.net (yes it's self-hosted)! Sign in to your Gotify server's dashboard, and then [...]
Sometimes you have to SSH into different devices with the same IP address, for example when you flash routers with OpenWrt and want to do initial configuration. One annoyance with that is fingerprint checking, as the fingerprint will be different for every new device but the IP will stay the [...]
A theoretical setup where the encryption key is in the initramfs. You are encouraged to put /boot on a separate USB stick, or if you know what you're doing, make sure you're using classic HDDs, where you can safely erase the key on decommission.
You can find out really easily with one simple command: systemd-analyze Which will output something like: Startup finished in 9.708s (firmware) + 3.692s (loader) + 46.909s (kernel) + 13.614s (userspace) = 1min 13.924s graphical.target reached after 12.063s in userspace So as you can see, my laptop takes ages to boot. [...]
Not all my FIDO U2F keys (for e.g. Yubikey) were working under Linux and as it turns out, I had to add UDEV rules. I'll show you how. First, which rules you have to use depend on your UDEV version. You can check your version with: sudo udevadm --version All [...]
You might want to have your own /etc/resolv.conf but it keeps getting overwritten or lost. I have the solution! On systems like Ubuntu 18.04, by default the file /etc/resolv.conf is controlled by systemd-resolved. Usually it fetches the DNS servers and domain name (search domain) from DHCP and writes it to [...]