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I’ve been having a lot of fun with Cardboard, the scrollable tiling window manager (WM) (STWM) for Linux. It’s quite an unusual WM, and it’s really only at the prototype stage. After the initial learning curve, I found that it helped me stay focused on one task, and it greatly reduced how much time I spent rearranging my windows. You’re probably most familiar with a stacking WM; an environment whe
There’s a definitive answer to this question, and you can find it in RFC 8375: use home.arpa. Never heard of it before? It wasn’t assigned as a special purpose top-level domain (spTLD) name for residential and small networks until 2018. The home.arpa spTLD isn’t a globally unique domain name, and you can’t resolve it across the internet. It’s only meant to be used inside a small network, such as y
Several DNS-related programs want to automatically manage the DNS name server and resolution configuration file at /etc/resolv.conf. In some situations, you may want to manage this file yourself. Here is how you identify which programs are automatically managing this file on your Linux distribution, and how you can take back manual control of the file. There are quite a few different tools that fi
systemd enable services to run with a whole suite of hardening and sandboxing features from the Linux kernel. Here’s how to get a quick security review of the services running on your system and how to go about hardening their security. The Linux kernel can filter and limit access to file systems, networks, devices, kernel capabilities and system calls (syscalls), and more. In this article, I’ll f
You should probably avoid TP-Link products if you’re on a tight bandwidth budget. By design, TP-Link firmware sends six DNS requests and one NTP query every 5 seconds, for a total of 715,4 MB per month. The firmware of some TP-Link repeaters — but not routers — including all 2017 models are very talkative on NTP, to a total of 715,4 MB per month. NTP is the network time protocol used to synchroniz
Are you considering getting an ASUS wireless network product? This will be a fairly lengthy and in some places technical review of the many shortcomings of the ASUSWRT firmware that might change your mind about choosing ASUS networking products. I’m not reviewing the router I used for testing, a higher-end ASUS RT-AC87U, but rather the ASUSWRT (ASUS’ “Wireless Receiver/Transmitter”) firmware. The
Don’t run any of the commands mentioned in this article. They’re all intentionally very destructive for your Windows system. You’ve been warned. I attempted to run rm -rf --no-preserve-root "/mnt/c" in the new Windows Subsystem for Linux. I knew it could interact with the full file system and modify and delete files, but I expected to discover that Microsoft had included some kind of protection
The reaction to this headline from sysadmins who deploy Fail2Ban on an IPv6 enabled system is probably: “Fail2Ban doesn’t support IPv6‽” At least, that seems to be the reaction most admins have posted on forums and social media when they learn that Fail2Ban doesn’t support IPv6. Now Fail2Ban’s IPv4-only limitation is about to be lifted. Fail2Ban is a tool that identifies unwanted behaviors by moni
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