This is about the default configuration of the LEDs on router devices with the Freifunk / Gluon firmware (https://www.freifunk.net). For example, on my "TP-Link TL-WR841N/ND v9" the WAN and wifi LEDs are constantly blinking as there is constant traffic on the according devices. As this is by design in the Freifunk network, I'm not interested in the blinking. It is just distracting.
tl;dr: this post is about the free choice of routers to be used on home broadband connections in Germany. Since August 1st, a new law enables customers to receive credentials for the DSL connections as well as for VoIP services in order to use end devices (i.e. routers) of their choice. Since all of the following information are specific to one German local provider, NetCologne, the rest of the post is in German.
Here is a simple script to quickly get an overview of the SSL certificates used on various websites, e.g. to check expiration or issuer. For me, this helped a lot while migrating website certificates to Let’s Encrypt.