In my youth I enjoyed the LANs. One fun game we played was Quadra - which is a multiplayer tetris where by playing the game you send more blocks to your opponents making it very stressful :D https://github.com/quadra-game/quadra turns out it is open source and it's out …

The challenges Hoe the season to be jolly! Been giving a few CTFs lately. It started with the disobey 2020 puzzle to get the hacker ticket. Then there was the OverTheWire's 2019 advent CTF. And finally this one, the SANS holiday hackmechallenge - KringleCon 2019. As of writing I got …

Is there an open source thing out there I could use?? So if I only want to use mostly free and open source it there's a bunch of tools one need to glue together: These days I'd like to for primary ingestion have a BGP ECMP/anycast for rsyslog receivers …

Recently I had the pleasure of contributing upstream to the OpenStack project! A link to my merged patches: https://review.opendev.org/#/q/owner:+guldmyr+status:merged In a previous OpenStack summit (these days called OpenInfra Summits), (Vancouver 2018) I went there a few days early and attended the Upstream …

We use puppet at $dayjob to configure OpenStack. I wanted to know if there's a lot of unused code in our manifests! From left of stage enters: https://github.com/camptocamp/puppet-ghostbuster Step one is to install the puppet modules and gems and whatnot, this blog post was good about …

Finally got around to sorting out an issue which basically was that the TV+Chromecast near the TV was on another network than the media server and thus I couldn't stream videos by using my phone. I've been thinking lately and in previous posts that maybe I should just get …

https://www.guldmyr.com/some-updates-to-the-home-network/ Above is a previous post in this series about some improvements to my home network. With two modems from two ISPs. So! On Alibaba I found two Hasivo 8x1GbE managed fanless switches with VLAN support. Delivery time to Finland was really quick. It didn't say …

Current layout: The corner: Cable MODEM NAT&WiFi ISP A One server One desktop who should be on both networks, default gw on one Phones and tablets wifi TV Area: DSL Modem NAT&WiFi ISP B One raspberry pi connected to the server Phones and tablets wifi One chromecast, would …

Time to try out another programming language! Golang I see quite frequently in my twitters so have been thinking for a while - why not give it a shot for the next project! TLDR; https://github.com/martbhell/mailman-summarizer Why Would Anyone Ever Took a while to figure out what would …

Yay! Took the exam last week after having studied a few days. Nothing seemed to be impossible from the list of requirements at least :) Thought because it's done online it can be scheduled almost on demand, but one had to wait at least 24h for the exam environment to get …