Linux Raspberry Pi

Block SSH connections by origin of IP address

Linux Security

Email notification for fail2ban events

Linux Security

Protect SSH services with fail2ban

Internet und co Linux Raspberry Pi

Configure mail transport agent on Raspbian with external SMTP server

NAS

Use all-inkl.com DDNS with Synology DiskStation

Apple

Free purgeable space on MacOS Mojave

Home Automation Linux

Configure Mosquitto mqtt broker user authentication in Docker running on Synology NAS

Home Automation

Creating a backup of an existing OpenHAB installation

Hardware Linux

Howto control a Xiaomi Robot Vacuum without app using Valetudo