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Dan Q

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Personal blog of Dan Q: hacker, magician, geocacher, gamer...

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[Article] Exploiting Fail2ban "portscan" permablocks over HTTP for denial-of-service

On a forum they and I share, Loebas suggested that I should be careful doing portscans in case I hit e.g. fail2ban rules. I counter that such rulesets would be a terrible idea (and are therefore uncommon), and provide a specific demonstration of how an attacker can turn them against the site's legitimate users!

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[Checkin] Geohashing expedition 2026-10-04 51 -2

[Checkin] Geohashing expedition 2026-10-04 51 -2

A pre-dawn walk around East Bristol from a Three Rings event took me to within 16 metres... but not quite all the way to... a geohashpoint.

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[Note] Crash Diet

A Three Rings development sub-team seems to have developed a habit of making production server changes at in-person events, right before meals are served. On at least one previous occasion this has led to them missing out on dinner as they monitored and maintained at-risk servers when they ought to be eating. Until the servers […]

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[Checkin] Dan Q found GC85TVQ Out Of Office

This checkin to GC85TVQ Out Of Office reflects a geocaching.com log entry. See more of Dan's cache logs. I expected not to have opportunity for a second attempt at this today, but my schedule opened up somewhat when the fire alarm went off at the hotel and we had to evacuate! As hotel guests and […]

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[Checkin] Dan Q did not find GC85TVQ Out Of Office

This checkin to GC85TVQ Out Of Office reflects a geocaching.com log entry. See more of Dan's cache logs. I'm spending the weekend in the hotel nearby, for the AGM of a nonprofit I'm involved with. This morning I realised they I had a spare quarter of an hour before a meeting and wondered if I […]

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[Repost] Do not build the LLM torture factory

[Repost] Do not build the LLM torture factory

Sean Goedecke puts forward a few arguments why people shouldn't play at 'torturing' LLMs. I disagree with many of his arguments, but I agree with his conclusion because of a different argument: one made by animal rights activists for hundreds of years now: that people who 'practice' abuse are more-likely to go on to commit (further) abuse.

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[Repost] I’m leaving Reddit because of RSS

For Jeff Johnson, Reddit's ecosystem becoming yet-more closed-down and enshittified, with them dropping RSS support, is the last straw. For me, it would have been too (if I hadn't already abandoned ship nine years prior!).

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[Article] Firefox 157 broke my vertical tabs

[Article] Firefox 157 broke my vertical tabs

Firefox 157's new UI engine Nova made my previously-beautiful vertical tabs into a pile of hot garbage. Ugh.

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[Note] Blind Tango

TIL that I dance Argentine Tango with Ruth better... when I close my eyes. It's a fundamentally intuitive and semi-improvised dance built on connection and communication and it turns out that, for me at least, the best way to stop trying to visually predict what a partner (I know well enough to "read" visually) is […]

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[Reply] Re: Domains Cost More, Blogs Disappear

While bemoaning the rising cost of domain names, Michael also observed that blogging and personal websites are suffering a lack of young newcomers. In my reply I disagree, saying that they're there... just not where he's looking for them!

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[Repost] Tangled earphones were a feature, not a bug.

[Repost] Tangled earphones were a feature, not a bug.

Akshay Chugh misses wired headphones for the anti-feature that they'd inevitably tangle up in your pocket. I echo his sentiment, and add a few other observations about things we've traded away in exchange for the convenience of wireless buds.

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[Article] Top 100 Geohasher

[Article] Top 100 Geohasher

I'm now in the top-hundred geohashers! But the exciting achievement is that I upgraded geohashing.site from MediaWiki 1.31 to 1.43, after leaving it somewhat technically-neglected for about seven years!

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[Note] Slash pages

My newly-revamped personal site has an almost full suite of slash pages; something I'd been meaning to do for a while: https://danq.me/slashes Still no /now, but I'll get that sorted someday, perhaps!

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[Checkin] Dan Q found GC46YDF Second Row - Ball Retention

This checkin to GC46YDF Second Row - Ball Retention reflects a geocaching.com log entry. See more of Dan's cache logs. Found lying on the ground, in the open. Based on the previous log, I guess that, without its magnets, it quickly fell down. Re-hid, visibly, in a large crack in the wall which I hope […]

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[Checkin] Dan Q found GC46YCV Lock - Hanging Bison

This checkin to GC46YCV Lock - Hanging Bison reflects a geocaching.com log entry. See more of Dan's cache logs. A quick find for the geohound and I while walking back to Tackley (via the TP6298 trigpoint up on the rise to the North) from the 2026-09-27 51 -1 geohashpoint. A successful hashing expedition followed by […]

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[Checkin] Geohashing expedition 2026-09-27 51 -1

[Checkin] Geohashing expedition 2026-09-27 51 -1

I woke early and grumpy and, to try to shake myself out of a funk, went out with the dog in search of a geohashpoint near a trigpoint in a field near Tackley.

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[Repost] Thanking is an action applying to one visible thing

"Thanking is an action applying to one visible thing." is a literal line in the source code of one of my favourite video games, blackle mori observes.

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[Article] Styling :visited links using hue-rotation

[Article] Styling :visited links using hue-rotation

My new site theme offers a :visited link style, but for convenience it's based on a CSS hsl-transformation. Here's how it works...

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[Note] DanQ.me, 2026 Edition

After months of minor tweaks, on-and-off, I finally bit the bullet and hit "publish" on my new theme for DanQ.me. It's not perfect; it's got all kinds of bugs... but what's the point of having a personal webite if you can't trash it once in a while with an ill-advised "fun" rework, right?

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[Note] content-visibility: hidden;

Here’s a neat trick. I’ve got a web page with many HTML popovers, styled as modals to create a no-JS gallery/lightbox. But LCP suffers because the browser tries to reserve space for the images within (even though they’re within not-yet-shown popovers). This CSS one-liner saved the day. It basically says “skip over not-yet open popovers […]

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[Repost] Polyday Politics workshop

Grant ran a workshop on politics (and law) around polyamory, at a recent event. I wasn't there, but enjoyed reading his notes after-the-fact... and wanted to use the opportunity to share some of my own thoughts and experiences.

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[Article] Browser vertical tabs are great (and they’re older than you think!)

[Article] Browser vertical tabs are great (and they’re older than you think!)

A conversation about the invention of browsers with (the option of) vertical tabs reminded me of how brilliant they are. I used them back in 2000, and (with a break in the middle) I use them again today, and they're wonderful. Let me tell you why!

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[Article] Things Champ’d Up thinks are uniquely American

[Article] Things Champ’d Up thinks are uniquely American

When I play Jackbox Games with my friends, I enable the 'filter US-centric content'. But what does that actually do? Let's swiftly do a bit of easy reverse-engineering on one of my favourite games in the series, Champ'd Up, and find out... what the developer thinks "US-centric" means!

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[Repost] Your phone is not the problem

Following the discussions in the blogsphere lately about our relationships with our phones, I'd like to echo Antonio Santos' sentiments, and add a few supporting thoughts of my own.

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[Note] Pence Per Sht

Every time I see Sainsburys comparing the value-for-money of different brands of toilet roll, the abbreviation they use catches me out and I think they’re telling me how much paper I should be “using”.

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[Article] WordArt is still supported… in Microsoft Outlook!

[Article] WordArt is still supported… in Microsoft Outlook!

25 years ago, WordArt was everywhere. Nowadays, it's been quietly expunged from Microsoft Office. Except... Outlook, via a series of complicated hacks, can still render WordArt to this day! And I'm pretty curious exactly how it does so...

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[Video] What Should William Do? [RSS Exclusive!]

[Video] What Should William Do? [RSS Exclusive!]

I'm just doing my annual Preventing Workplace Harassment training at work, and one clip in particular stood out as... especially half-hearted.

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[Note] F-Day plus 214

It’s been 214 days since I had to evacuate my house following a flood, and repair work is (intermittently) underway. And there are so-many moving pieces to this dance that… it’s little wonder that people are getting confused. Like: Our insurance company appointed a relocations specialist to handle our temporary accommodation needs (moving van, sourcing […]

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[Article] A Postcard from a Labyrinth Artist

[Article] A Postcard from a Labyrinth Artist

Another Postcard From The Internet landed on my doormat this week... and it's from a real-life labyrinth designer and artist based in Canada. So cool!

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[Repost] On Publishing Your Salary

Kev Quirk observes that of folks who (like me) choose to share their salary online, there's likely to be a skew towards higher salaries. What can we do to better-contextualise that, I wonder?