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Posted by jpluimers on 2026/01/06
Everytime when installing a pfSense router from scratch, I seem to re-learn a few of the below quirks. So it was finally time to document them (:
Quite a few of my pfSense configurations are just doing routing between various networks, should not provide DHCP leases and do not always need or have a WAN connected (i.e. they are LAN-only).
Posted in Communications Development, Conference Topics, Conferences, Cyberchef, Development, DHCP, Encoding, Event, Hardware, HTTP, Internet protocol suite, MikroTik, Network-and-equipment, pfSense, Power User, routers, Software Development, SSH, TCP, TLS, UDP | Tagged: 8846 | Leave a Comment »
Posted by jpluimers on 2025/12/25
This is actually the WireGuard package you can install on pfSense CE 2.5.2 and higher: [Wayback/Archive] rcmcdonald91/pfSense-pkg-WireGuard: This is a port of the original WireGuard UI bits as implemented by Netgate in pfSense 2.5.0 to a package suitable for rapid iteration and more frequent updating on future releases of pfSense.
Note that the source code mentions a lot of web-technologies but that is because the majority of the code is the pfSense plugin. Underneath it pulls the actual build from [Wayback/Archive] git.zx2c4.com/wireguard-freebsd/snapshot which is almost exclusively C code.
Like WireGuardNT on Windows, it uses a high performance kernel mode driver.
Some more links on it:
Posted in Conference Topics, Conferences, Development, DVCS - Distributed Version Control, Event, git, GitHub, Hardware, Network-and-equipment, pfSense, Power User, routers, Software Development, Source Code Management, Tailscale | Tagged: 11281, 73 | Leave a Comment »
Posted by jpluimers on 2025/12/16
[Wayback/Archive] version control – How can I see the changes in a Git commit? – Stack Overflow (thanks [Wayback/Archive] laktak, [Wayback/Archive] Nevik Rehnel, [Wayback/Archive] Juuso Ohtonen and [Wayback/Archive] User c z – Stack Overflow)
This looks like a valid question, but in reality it is not.
The thing is: in git, think of a commit not as a diff but as a snapshot*.
A diff is the difference between two commits.
Since most commits have just a single parent, so that’s why many people call a commit a diff. But that’s not true, especially not for merge commits that have at least two parents.
Anyway, the question, answer and comment from the link above already give some insight (note COMMIT everywhere below has to be replaced with the commit hash):
Posted in Conference Topics, Conferences, Development, DVCS - Distributed Version Control, Event, git, Software Development, Source Code Management | Leave a Comment »
Posted by jpluimers on 2025/12/11
Despite UML (Unified Modelling Language) not having a specific diagram mode for computer networks, PlantUML does support a computer network diagram mode.
Here are some links that got me going to design a site to site VPN situation that I will document in more detail later on this blog.
Posted in Conference Topics, Conferences, Development, Diagram, Event, PlantUML, Software Development, UML | Leave a Comment »
Posted by jpluimers on 2025/12/04
I used [Wayback/Archive] How could i get a permanent link for raw file? · community · Discussion #22537 · GitHub to go
The reason I needed it is that for quite a while now, GitHub has started to display PDF files as preview, and modified the download behaviour to get a blob: link instead of the actual raw file download location.
On the to do list:
Thanks [Wayback/Archive] Lotaristo (Czeslaw Meyer) and [Wayback/Archive] byrneh (Hugh Byrne)
--jeroen
Posted in Bookmarklet, Conference Topics, Conferences, Development, DVCS - Distributed Version Control, Event, gist, git, GitHub, GitLab, Hosting, JavaScript/ECMAScript, Power User, Scripting, Software Development, Source Code Management | Tagged: 22537 | Leave a Comment »
Posted by jpluimers on 2025/11/25
[Wayback/Archive] Online x86 and x64 Intel Instruction Assembler
The source starts in these two files:
Posted in Assembly Language, Conference Topics, Conferences, Development, Event, Software Development, x64, x86 | Leave a Comment »
Posted by jpluimers on 2025/11/06
For my link archive: [Wayback/Archive] Merging Git repositories without losing history – The Continuous Improver
Via:
–jeroen
Posted in Conference Topics, Conferences, Development, DVCS - Distributed Version Control, Event, git, Software Development, Source Code Management | Leave a Comment »
Posted by jpluimers on 2025/10/28
[Wayback/Archive] Refactoring Is Not Just Clickbait – Kevlin Henney – NDC Oslo 2022 – YouTube
Via:
–jeroen
Posted in Agile, Code Quality, Conference Topics, Conferences, Development, Event, Refactoring, Software Development, Technical Debt | Leave a Comment »
Posted by jpluimers on 2025/10/23
Get really good at programming.
Develop fluency in 66 programming languages with our unique blend of learning, practice and mentoring. Exercism is fun, effective and 100% free, forever.
Via [Wayback/Archive] Stephan (TheTraveller@sw-development-is.social) on Twitter: “Would you like to improve your programming skills online? I recommend trying exercism.io. It’s free and you can get feedback from real humans (if you’re in the #Ruby track, may be even from me 😀 ). #exercism #ISupportExercism”
–jeroen
Posted in Conference Topics, Conferences, Development, Event, Software Development | Tagged: exercism, ISupportExercism, Ruby | Leave a Comment »
Posted by jpluimers on 2025/10/21
This is so cool: graphical [Wayback/Archive] Introduction to the A* Algorithm
It is still being updated, which is even cooler:
Created 26 May 2014, updated Aug 2014, Feb 2016, Jun 2016, Jun 2020, Jul 2023
These are for general graph traversal. That Wikipedia article only mentions depth-first search and breadth-first search, but forgets the A* search algorithm which is an extension of the also not mentioned Dijkstra’s algorithm which in turn is based on breadth-first search.
The visualisations cover the breadth-first algorithms.
The example code is Python based, but easy to translate into other languages.
The visualisation code is in JavaScript, using these files (they Archive.is versions are more accurate than the Wayback Machine ones):
Posted in Algorithms, Conference Topics, Conferences, Development, Event, Python, Scripting, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 