Links
Add
Multiple Wireless Access Points On The Same Network - 7 Rules
https://www.madebywifi.com/blog/multiple-wifi-aps-on-the-same-network/
There are best practices that need to be followed when deploying multiple wireless access points on the same network, learn more on our blog!
Added 8 months ago
SDF Chatter - A Lemmy instance hosted by the SDF Public Access UNIX System
https://lemmy.sdf.org/
Lemmy
GitHub - peelman/sysadmin-scripts: A selection of short sysadmin scripts I use
https://github.com/peelman/sysadmin-scripts
A selection of short sysadmin scripts I use. Contribute to peelman/sysadmin-scripts development by creating an account on GitHub.
Added 4 years ago
[Bash] Bash prompt - Pastebin.com
http://pastebin.com/R63iEfr6
Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.
Added 10 years ago
A Pentester's Guide - Part 3 (OSINT, Breach Dumps, & Password Spraying)
https://delta.navisec.io/osint-for-pentesters-part-3-password-spraying-methodology/
Added 6 years ago
Quickly Build RESTful APIs in PHP with Slim – Part 4 » Things I Sort of Know
http://ericbrandel.com/2013/01/24/quickly-build-restful-apis-in-php-with-slim-part-4/
The fourth and final part of this series is focusing on using the Slim Framework’s middleware functionality to validate (to a degree) RESTful API requests. This post will show how to add a si…
Added 10 years ago
Heyoka - Piqûres de Rappel [1991-1997] - YouTube
https://www.youtube.com/watch?v=S-bVjDHJxCA&feature=youtu.be
Auf YouTube findest du die angesagtesten Videos und Tracks. Außerdem kannst du eigene Inhalte hochladen und mit Freunden oder gleich der ganzen Welt teilen.
Added 10 years ago
NLNOG
https://github.com/NLNOG
Netherlands Network Operator Group. NLNOG has 29 repositories available. Follow their code on GitHub.
Added 8 months ago
Setting up a Windows 10 VM with QEmu on Ubuntu 22.04 | Ecology, Stats & Bioacoustics
https://rtbecard.gitlab.io/2022/07/23/QEmu_win10.html
I’ve been faithfully running VirtualBox for my Windows 10 VMs for years… until last week. A kernel update on Pop!_OS somehow broke my Windows 10 VMs across both my machines, causing frequent crashes until the disk images finally corrupted and wouldn’t boot anymore. I took this as a sign that it’s time to finally switch over to QEmu as my go-to VM platform.
Added 6 months ago
How to Download a List of All Registered Domain Names - jordan-wright
http://jordan-wright.com/blog/2015/09/30/how-to-download-a-list-of-all-registered-domain-names/
Security and Programming Blog
Added 10 years ago
Whistleface - Twitch
https://www.twitch.tv/whistleface
I stream house music and play video games o_0
Random MAC Address Generator
http://www.hellion.org.uk/cgi-bin/randmac.pl?scope=local&type=unicast
Added 10 years ago
Why Hire a LFCS or LFCE - Linux Foundation Training
https://training.linuxfoundation.org/certification/why-hire-a-lfcs-or-lfce
From Kubernetes to blockchain to Linux training, explore the full list of Linux Foundation Training and Certification offerings.
Added 10 years ago
Basic Python Scripts to Save and Load Audio Files | TomRoelandts.com
https://tomroelandts.com/articles/basic-python-scripts-to-save-and-load-audio-files
Monsta Island Czars - Wikipedia
https://en.wikipedia.org/wiki/Monsta_Island_Czars
Added 3 months ago
Surpassing ATS and Optimizing Your Resume via ChatGPT | HackerNoon
https://hackernoon.com/surpassing-ats-and-optimizing-your-resume-via-chatgpt
I demonstrate how we can make use of ATS and optimize every word of our resume through ChatGPT to increase chances of getting an interview
thenotsosecretlifeofus | Motherhood marriage insanity friendship family
https://thenotsosecretlifeofus.wordpress.com/
Motherhood marriage insanity friendship family
Added 9 years ago
14 x 24 Owner Built Cabin w/Loft | Truth is Treason | Truth is Treason
http://www.truthistreason.net/14-x-24-owner-built-cabin-wloft
Added 7 years ago
Converting Debian 10/11/12 to Netplan.io | Pedro Rodrigues
https://pedroagrodrigues.com/posts/Debian_To_Netplan/
Netplan Migration
Added 2 months ago
George Washington's Rules of Civility : NPR
http://www.npr.org/templates/story/story.php?storyId=1248919
Through military campaigns, diplomatic ventures and presidential politics, George Washington was guided by a simple set of 110 maxims he first copied out as a Virginia schoolboy. In a newly published edition of the 'Rules of Civility & Decent Behavior in Company and Conversation,' Washington biographer Richard Brookhiser says these principles could teach modern-day Americans a thing or two about ambition and morality. Read the rules online.
Added 9 years ago
VoIP HOWTO: Asterisk, SIP, FreePBX, and geekery | axfp.org
http://axfp.org/voip-howto-asterisk-sip-freepbx-and-geekery/
This HOWTO’s complexity level is Moderate. You’ll need some experience dealing with networks, a basic grasp of network technology, and the desire to muck around a little bit with config…
Added 10 years ago
CanSat: A tiny, can-sized, Raspberry Pi-powered satellite - Raspberry Pi
https://www.raspberrypi.com/news/cansat-a-tiny-can-sized-raspberry-pi-powered-satellite/
Added 8 months ago
MPD — Dan's Cheat Sheets 1 documentation
https://cheat.readthedocs.io/en/latest/mpd.html
Broken
Self Hosting Game Roms? : r/selfhosted
https://www.reddit.com/r/selfhosted/comments/1n43ark/self_hosting_game_roms/
Added 2 months ago
When Not to Obey Orders
https://warontherocks.com/2019/07/when-not-to-obey-orders/
During the Austro-Prussian War of 1866, a Prussian officer defended himself from reprimand by arguing that he was simply following orders. His commander, Prince Frederick Charles, reportedly replied: “His Majesty made you a Major because he believed you would know when not to obey his orders.” It’s a simple vignette, but the question that it raises is anything but simple: When should a military officer disobey orders? I have always believed that those who answer, “only when those orders are illegal,” have probably not thought hard enough about the question. An officer’s oath of office, professional ethics, and obligation to subordinates may at times require him to dispute or even disobey a legal order.
Added 8 months ago
Computer and Information Systems Manager Salary in Vermont
http://www.usawage.com/vt/computer_and_information_systems_managers-salary-in-vermont.php
Trend and statistics of average annual salaries of computer and information systems managers in Vermont.
Added 8 years ago
rtl-sdr.com - RTL-SDR (RTL2832U) and software defined radio news and projects. Also featuring Airspy, HackRF, FCD, SDRplay and more.
https://www.rtl-sdr.com/
RTL-SDR (RTL2832U) and software defined radio news and projects. Also featuring Airspy, HackRF, FCD, SDRplay and more.
Added 7 years ago
How to add real web push notifications to your webapp - A geek with a hat
https://swizec.com/blog/add-real-web-push-notifications-webapp/swizec/7924
Added 6 years ago
grugq/portal · GitHub
https://github.com/grugq/portal
Personal Onion Router To Assure Liberty. Contribute to grugq/portal development by creating an account on GitHub.
Added 10 years ago
GitHub - nutjob-laboratories/erk: Ərk is an open source, cross-platform IRC client written in Python 3, Qt 5, and Twisted.
https://github.com/nutjob-laboratories/erk
Ərk is an open source, cross-platform IRC client written in Python 3, Qt 5, and Twisted. - nutjob-laboratories/erk
Added 4 months ago
Hikvision Network Mobile DVR Secures Armored Truck of China Merchants Bank
http://www.hikvision.com/ueditor/net/upload/2015-06-10/57806a32-51c0-4ae4-b937-384098c12dc8.pdf
Added 7 years ago
Distributed Logging Architecture in the Container Era | Treasure Data Blog
https://blog.treasuredata.com/blog/2016/08/03/distributed-logging-architecture-in-the-container-era/
Modern tech enterprise is all about microservices and, increasingly, containers. Microservices are essential in a world in which services need to support a multitude of platforms and applications. Containers, like Docker, allow much more efficient resource...
Added 9 years ago
Full disk encryption (including boot) on Debian Bookworm ☯ Daniel Wayne Armstrong
https://www.dwarmstrong.org/fde-debian/
Libre all the things
Added 10 months ago
NPI Technology Management - Network Performance Inc.
http://www.npi.net/
A trusted business technology comapny providing IT support services to businesses with the right IT systems to reach their goals. Sign up for remote IT support.
Added 8 years ago
jhollinger — How to use Thin effectivly
https://jordanhollinger.com/2011/04/22/how-to-use-thin-effectivly/
Code et all
Seth MacFarlane Missed a Doomed 9/11 Flight
http://wafflesatnoon.com/seth-macfarlane-missed-911-flight/
Seth MacFarlane narrowly avoided death when he missed Flight 11 on September 11, 2001 by only a few minutes.
Added 6 years ago
When The Headhunter Calls, Do This - Forbes
http://www.forbes.com/sites/lizryan/2014/02/05/when-the-headhunter-calls-do-this/
"That was an awesome speech!" said the young man carrying my suitcase. "The second-years gave us a hint of what to expect. You're a riot in person. I can't believe you got our MBA class to sing 'Bohemian Rhapsody.'" "Are you excited about graduation?" I asked the young man. "Yes and no," [...]
Added 10 years ago
GitHub - samshadwell/TrumpScript: Make Python great again
https://github.com/samshadwell/TrumpScript
Make Python great again. Contribute to samshadwell/TrumpScript development by creating an account on GitHub.
Added 4 months ago
cli — command line tools — pyCLI devel documentation
https://pythonhosted.org/pyCLI/
Added 10 years ago
A Look into the Yellowing and Deyellowing of ABS Plastics | by David Flood | Medium
https://medium.com/@pueojit/a-look-into-the-yellowing-and-deyellowing-of-abs-plastics-db14b646e0ad
Added 2 months ago
Live-Room - gratefuldude85
https://trovo.live/s/gratefuldude85/208784440
VLAN ID naming schemes — mythofechelon
https://mythofechelon.co.uk/blog/2019/6/27/vlan-id-naming-schemes
Naming schemes are hard and VLAN IDs are particularly tricky. This is my
solution.
Added 3 months ago
Screenly Playground | Playground
https://playground.srly.io/
Various examples of how developers can use Screenly and Screenly’s API
Added 2 months ago
Greg Ryan - Gypsy Wagon Design Workshop
http://gregryan.us/gypsy-wagon-design-workshop
Greg Ryan. Gypsy Wagon Workshop Registration
Added 9 years ago
Vintage, Antique and Used Hand Tools at Crawley Falls Antiques - tools - by owner - sale
https://boston.craigslist.org/nos/tls/d/fremont-vintage-antique-and-used-hand/7032403614.html
Added 5 years ago
Hikvision Password Reset
https://securitycamcenter.com/Hikvision_reset_password.html
Aerial Advertising: Skywriting - Airplane Banners - Sky Messages - Flying Banners
http://aerogram.ca/
Aerogram is Canada’s leader in aerial advertising since 1984. For a unique and efficient aerial advertising campaign, contact us. We get your aerial ads seen.
Added 9 years ago
How to have some fun using the terminal. · GitHub
https://gist.github.com/dakull/6615458
Added 8 years ago
Updating Polycom SIP Phone Firmware : Jeff Schertz's Blog
http://blog.schertz.name/2012/10/updating-polycom-sip-phone/
Added 10 years ago
Keeping WordPress Secure - The Complete Guide to WP Security
https://premium.wpmudev.org/blog/keeping-wordpress-secure-the-ultimate-guide/#bestpractices
This comprehensive, deep-dive guide into WordPress security covers everything you need to know to keep your website safe and secure.
Added 10 years ago
Modern Linux Terminal With Alacritty, JetBrains Mono & Emojis - Sebastian Daschner
https://blog.sebastian-daschner.com/entries/linux-terminal-font-alacritty-jetbrains-mono-emoji
Added 4 months ago
alacritty.yml | CheatSheet
https://sunnnychan.github.io/cheatsheet/linux/config/alacritty.yml.html
Added 4 months ago
Will Usher
https://www.willusher.io/general/2020/11/15/hw-accel-encoding-rpi4/
lying cops owned by an uber driver who was actually a lawyer - YouTube
https://www.youtube.com/watch?v=89hWthT4Qck
Auf YouTube findest du die angesagtesten Videos und Tracks. Außerdem kannst du eigene Inhalte hochladen und mit Freunden oder gleich der ganzen Welt teilen.
Added 7 years ago
GitHub - TristanGNS/wazuh-cjis-rules: Modular CJIS Compliance Ruleset for Wazuh A maintainable, version-controlled collection of custom Wazuh rules mapped to CJIS Security Policy controls. Designed for easy auditing, deployment, and integration with SIEM workflows.
https://github.com/TristanGNS/wazuh-cjis-rules
Modular CJIS Compliance Ruleset for Wazuh A maintainable, version-controlled collection of custom Wazuh rules mapped to CJIS Security Policy controls. Designed for easy auditing, deployment, and integration with SIEM workflows. - TristanGNS/wazuh-cjis-rules
Added 4 months ago
▶ The White Stripes- Hello Operator at Spaceland - YouTube
https://www.youtube.com/watch?v=2p6hBsKvngk
Auf YouTube findest du die angesagtesten Videos und Tracks. Außerdem kannst du eigene Inhalte hochladen und mit Freunden oder gleich der ganzen Welt teilen.
Added 10 years ago
High-resolution audio - High-resolution audio - Wikipedia
https://en.wikipedia.org/wiki/High-resolution_audio#/media/File:High-resolution_audio.svg
Video Surveillance Bandwidth Requirements - Calculation of Utilization - Mistral Solutions
https://www.mistralsolutions.com/articles/video-surveillance-bandwidth-requirements-calculation-utilization/
Introduction One question in the minds of many users and potential users of video surveillance is, How do I calculate the quantum of data generated by a surveillance camera and what is the bandwidth required to stream live video stream to remote viewers? Bandwidth Calculation Calculating the approximate bandwidth of a video stream is a…
Added 7 years ago
Linux Bonding, LLDP, and MAC Flapping
https://packetpushers.net/blog/linux-bonding-lldp-and-mac-flapping/
Sometimes a painfully troublesome networking problem can have a complicated and brain-twisting root cause, one which you dread having to explain to peers and managers. However, sometimes the root cause is dead simple and makes you feel silly for how long it took you to find it. Today, I had one of the latter and... Read more »
Added 8 months ago
Comparison of Modern Linux Backup Tools – Borg, Bupstash and Kopia | Ma_Sys.ma Website 5
https://masysma.net/37/backup_tests_borg_bupstash_kopia.xhtml
Added 7 months ago
Replace PowerDNS by Knot DNS and Knot Resolver+supervisor with DNSSEC, DNS over TLS and domain name spoofing – # cd /scratch
https://yeupou.wordpress.com/2023/02/11/replace-powerdns-by-knot-dns-and-knot-resolversupervisor-with-dnssec-dns-over-tls-and-domain-name-spoofing/
I was considering using Knot DNS since a while. Switching to DNS over TLS for the resolver queries was the push needed. Turns out that transposing my setup with Knot DNS is very easy and fast. Knot Resolver does not provide init scripts and suggests to use supervisor as an alternative to systemd omnipresent features.…
Added 2 months ago
Job Openings - Red Canary
https://redcanary.com/job-openings/
Explore our current job openings and help create a world where organizations can make their greatest impact without fear of a cyber attack.
GitHub - webcast/webcast.js: API and documentation for the webcast websocket protocol
https://github.com/webcast/webcast.js
API and documentation for the webcast websocket protocol - webcast/webcast.js
Added 8 months ago
2.4A High Speed Charging Magnetic Cable For Android Or Apple Product - Your Wish Store
https://www.yourwishstore.com/products/2-4a-magnetic-cable-micro-usb-data-cable-for-apple-iphone-6-5-5s-6s-plus-charging-cable-android-for-samsung-hua-wei-mobile-phone?variant=31926319692
Added 8 years ago
Grateful Dead - NBC "Time and Again" (Documentary) circa 2000 - YouTube
https://www.youtube.com/watch?v=pC6N1vpRl1Y
Auf YouTube findest du die angesagtesten Videos und Tracks. Außerdem kannst du eigene Inhalte hochladen und mit Freunden oder gleich der ganzen Welt teilen.
Added 8 years ago
Font Settings – Sublime Text 3 Documentation
https://www.sublimetext.com/docs/3/font.html
Added 6 years ago
Blog - Sam Stelfox - Software Engineer & Linux Gubernāre
https://stelfox.net/blog/
I periodically post various thoughts, tips, and frustrations with software. My writing style has changed over time, for the better I believe, so please forgive my younger self. Frequently the topics are related to errors that may no longer be present in the software that provoked my ire so I recommend double checking the content with official documentation where possible.
Added 8 years ago
Spectrograms with FFMpeg – CloudACM
https://www.cloudacm.com/?p=3105
Added 1 month ago
Sonicwall Firewall - SIP Transformations – OnSIP Support
https://support.onsip.com/hc/en-us/articles/204029470-Sonicwall-Firewall-SIP-Transformations
Added 9 years ago
Broken
40 Best fonts to use in a terminal emulator as of 2025 - Slant
https://www.slant.co/topics/7014/~fonts-to-use-in-a-terminal-emulator
Added 4 months ago
Setting Up a Simple Git Server - Gitweb: The Unexpected Part 2 | Notes
https://www.henryleach.com/2025/06/setting-up-a-simple-git-server-gitweb-the-unexpected-part-2/
A few weeks ago I set up a simple git server to run at home so I don't have to rely on Github or similar external services. That worked fine, but two things felt unfinished: The ability to create a new repository, and an easy way of listing the existing ones, without having to SSH into the host. Luckily with GitWeb, shell scripts and CGI magic we can fix that.
Added 4 months ago
Building a WordPress virtualization solution using LXD/LXC containers - Bobcares
https://bobcares.com/blog/wordpress-hosting-using-lxd-lxc-server-virtualization-solution/
Server virtualization solution like LXC/LXD gives you a great way to easily provision high performance, secure, SEO friendly WordPress websites.
Added 9 years ago
Setting up Ubuntu 12.04 and Xen on Hetzner | clarkdave.net
http://clarkdave.net/2012/11/setting-up-ubuntu-12-04-and-xen-on-hetzner/
Added 10 years ago
PeteDavidson (Pete Davidson) · GitHub
https://github.com/PeteDavidson
PeteDavidson has one repository available. Follow their code on GitHub.
Added 4 years ago
CNC-machined aluminum passive cooling case for RPI 4/5 with 1 TB SSD : r/raspberry_pi
https://www.reddit.com/r/raspberry_pi/comments/1hzjdps/cncmachined_aluminum_passive_cooling_case_for_rpi/
Added 9 months ago
Captive Portal With PF - Computerglitch
http://www.computerglitch.net/blog/blog/2011/07/13/captive-portal-with-pf/
I had a need to create a captive portal at a customer site without installing a new piece of hardware. I decided to create a OpenBSD VM with the …
Added 3 months ago
manubot/rootstock: Clone me to create your Manubot manuscript
https://github.com/manubot/rootstock
Clone me to create your Manubot manuscript. Contribute to manubot/rootstock development by creating an account on GitHub.
Added 8 months ago
Camera, code, coffee | Turning an iPad or an iPhone into a Linux-based photography companion
https://cameracode.coffee/ipad-iphone-linux-photography/
ToolsMisc - SqueezeboxWiki
https://wiki.slimdevices.com/index.php/ToolsMisc.html#Miscellaneous_Tools
Pen Test Partners: Boeing 747s receive critical software updates over 3.5" floppy disks • The Register
https://www.theregister.com/2020/08/10/boeing_747_floppy_drive_updates_walkthrough/
Industry binning old aircraft is an opportunity for aviation infosec
Added 4 months ago
Grateful Dead Cover Art: Grateful Dead Cover Art
https://gratefuldeadcoverart.blogspot.com/p/grateful-dead-cover-art.html
(2) The Impossible Landing - United Airlines Flight 232 - P3D - YouTube
https://www.youtube.com/watch?v=2JVN3rVVoYU
Auf YouTube findest du die angesagtesten Videos und Tracks. Außerdem kannst du eigene Inhalte hochladen und mit Freunden oder gleich der ganzen Welt teilen.
Added 7 years ago
Broken
Anthias (Screenly) | allen@gattis.org:
https://www.gattis.org/docs/communication/signage/anthias/
Added 3 months ago
List of mountains of Vermont - Wikipedia
https://en.wikipedia.org/wiki/List_of_mountains_of_Vermont
Added 8 years ago
Grateful Dead Lyric And Song Finder
http://www.whitegum.com/intro.htm
Search for words or phrases in Grateful Dead lyrics
Added 6 years ago
DevSecOps: Part 1. In this blog, DevSecOps is discussed as… | by Blogs4devs | Medium
https://medium.com/@blogs4devs/devsecops-part-1-541ed83fa58e
30x Faster Cache and Site Speed with TMPFS
http://www.askapache.com/optimize/super-speed-secrets.html
NOT a typo.. 30x is measurable, well-documented, and easily tested. This is what open-source is about. I haven’t had time to post much the past year, I'm always working! So I wanted to make up for that by publishing an article on a topic that would blow your mind and be something that you could actually start using and really get some benefit out of it. This is one of those articles that the majority of web hosting companies would love to see in paperback, so they could burn it.
Added 9 years ago
www.governmentattic.org/18docs/Hist_US_COMSEC_Boak_NSA_1973u.pdf
http://www.governmentattic.org/18docs/Hist_US_COMSEC_Boak_NSA_1973u.pdf
Added 9 years ago
slimphp/Slim: Slim Framework source code
https://github.com/slimphp/Slim
Slim is a PHP micro framework that helps you quickly write simple yet powerful web applications and APIs. - slimphp/Slim
Added 9 years ago
KeePassXC: User Guide
https://keepassxc.org/docs/KeePassXC_UserGuide#_database_sharing_with_keeshare
Added 8 months ago
Taking a More Modern Approach to Windows Deployment | Joe The IT Guy
https://www.joetheitguy.com/taking-a-more-modern-approach-to-windows-pc-deployment/
Are you still doing Windows PC deployments the same way you’ve done it for the last ten years (or longer)? My blog wants to help you to address this.
Added 3 months ago
Decrypting FortiGate passwords (CVE-2019–6693) | by Bart Dopheide | Medium
https://medium.com/@bart.dopheide/decrypting-fortigate-passwords-cve-2019-6693-1239f6fd5a61
Oefenweb.nl
https://github.com/Oefenweb
Oefenweb.nl has 202 repositories available. Follow their code on GitHub.
Added 3 months ago
Broken
How to setup Prometheus, Node Exporter and Grafana | Jhooq
https://jhooq.com/prometheous-grafan-setup/#2-how-to-create-and-install-node-exporter
Added 2 years ago
Broken
PeaNUT: A Tiny Dashboard for Network UPS Tools : r/selfhosted
https://www.reddit.com/r/selfhosted/comments/169viub/peanut_a_tiny_dashboard_for_network_ups_tools/
Added 3 months ago
Amazon.com: HRD‑700 Portable Shortwave Radio, Bluetooth 5.0 Radio Music Player, FM MW SW WB NOAA Receiver Full Band Broadcast Reception, Radio CD Player Personal Radio Support Memory Card, 1000mah Battery : Electronics
https://www.amazon.com/Portable-Shortwave-Bluetooth-Broadcast-Reception/dp/B09WJ26PSD
Buy HRD‑700 Portable Shortwave Radio, Bluetooth 5.0 Radio Music Player, FM MW SW WB NOAA Receiver Full Band Broadcast Reception, Radio CD Player Radio Support Memory Card, 1000mah: Personal Radios - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
The Little Go Book
https://www.openmymind.net/The-Little-Go-Book/?_ga=2.208658071.485289798.1750479984-1445430609.1743375913?_ga=2.208658071.485289798.1750479984-1445430609.1743375913#
Free to download, The Little Go Book is an introduction to Google's Go programming language
Added 4 months ago
Repetitive Stress Injury: The Upper Trapezius - IDEA Health & Fitness Association
https://www.ideafit.com/repetitive-stress-injury/
Added 3 weeks ago
Recommended RSS feeds : r/hacking
https://www.reddit.com/r/hacking/comments/k47bnj/recommended_rss_feeds/
Where to Find Lossless Jerry Archival Releases : jgb
https://www.reddit.com/r/jgb/comments/6z2smr/where_to_find_lossless_jerry_archival_releases/
Added 5 years ago
Review of Raspberry Pi's PoE+ HAT (June 2021) | Jeff Geerling
https://www.jeffgeerling.com/blog/2021/review-raspberry-pis-poe-hat-june-2021