Automatically requesting TLS/SSL certificates using the ACME protocol is quite nice. Usually to just get a regular TLS certificate, you just have to run an ACME capable tool or webserver, which w...
https://sig-io.nl/posts/acmesh-desec-dns-acme-challenge-cname/
Upto this week (end January 2020), a friend of mine used to run a couple of SSL/TLS related websites (cipherli.st, certificatemonitor.org, ssldecoder.org) which I used quite frequently. Sadly he ...
As in earlier years, Sig-I/O takes care of some of the lecture recordings at various conferences like CfgMgmtCamp, LOADays, HackerHotel, Eth0 and Techtalks at IT-Gilde, Revspace and Bitlair. Du...
With the release of the first beta version of RHEL-8, and more Linux trainings coming up in the coming months, I've decided to start writing some educational documentation for Linux System Admini...
https://sig-io.nl/posts/20181125-working-on-a-sysadmin-book/
IPV6 I value IPv6 access as quite important, however T-Mobile Thuis doesn't offer any official form of IPv6 on their network at this time. I looked into various options to get decent IPv6 for my...
I have been using Tweak.nl as my ISP for a few years now, since getting fiber-to-the-home, but Tweak doesn't have their own (non-KPN (incumbant dutch telco)) infrastructure in my area. This mean...
This week marks the 9th year in Sig-I/O's existance. Looking back over the past nine years shows a nice growth in the number of clients and a collection of interesting assignments Sig-I/O has bee...
https://sig-io.nl/posts/sig-io-now-9-years-old-debian-lts-sponsor-for-3/
As you might have noticed if you visited my site before, the entire look and feel has been changed. The site is now powered by the Nikola static-site-generator. The most-recent articles have bee...
https://sig-io.nl/posts/migrated-website-to-a-static-site-powered-by-nikola/
The Routerboard RB750Gr3 (aka Hex3) is a nice and very affordable (~$60) hardware platform based on the MediaTek MT7621AT. It features gigabit ethernet ports, and a relatively fast multi-core CP...
https://sig-io.nl/posts/openwrtlede-on-a-routerboard-rb750gr3-hex3/
One of my customers is using various (Samsung) SSD’s in their servers, and the first of these have started reaching their end-of-life. SSD’s have a somewhat different failure scenario then sp...
https://sig-io.nl/posts/monitoring-smart-attributes-in-nagiosicinga/