Hard-wired networks are usually provided with numerous security features. With wireless networks, however, admins often remain blind to intrusion attempts, which can be carried out by inexperienced users thanks to affordable gadgets. The remedy is a Wireless Intrusion Detection System (WIDS). Sounds expensive, but it isn’t. Read more

Recently I was looking for a very particular music track. It is a song from the 2017 anime adaptation of “Ghost in the Shell” with Scarlett Johansson. More precisely: the official trailer music1, which was not included in the sound score and therefore cannot be found in any of the mainstream music stores. Read more

Over the weekend I have increased security and automatized processes - that’s lame! This can be anything or nothing, too vague and unspecific. Well technically correct and with a touch of cynicism: “I translated bash scripts to YAML.” Okay, let’s agree on: I consolidated numerous bash scripts for automatically renewing certificates, reduced complexity, eliminated potential security risks when transferring certificates from outside reverse proxies to inside hosts, and made everything more transparent with both Ansible and Git. Read more

The simple, unspectacular things in life bring you ahead the curve. This bash script, for instance, removes all comments from a configuration file. In order that no empty lines remain instead, these are subsequently removed afterwards. What remains is the essence: what really counts. The usage is straightforward: Just add the desired config file(s) as parameters and you’re done! Read more