Why everyone needs to be behind Cloudflare. I don't think DDOSing sites out of whim is so rampant that everyone needs the virtual umbrella.
As a side note, what does your site do that it's possible to use up all server resources? Computers are stupid fast these days. I find it's really difficult to build something that doesn't scale to at least multiple hundreds of requests per second.
The VPS I use will nuke your instance if you run a game server. Not due to resource usage, but because it attracts DDoS like nothing else. Ban a teen for being an asshole and expect your service to be down for a week. And there isn't really Cloudflare for independent game servers. There's Steam Networking but it requires the developer to support it and of course Steam.
Valve's GDC talk about DDoS mitigation for games: https://youtu.be/2CQ1sxPppV4
And yet game servers still work fine. Which answers this subthread's question ("how likely is it to get DDoSed if you don't have Cloudflare"), answer: not very likely, it happens once in a while at most.
I run a small video game forum with posts going back to 2008. We got absolutely smashed by bots scraping for training data for LLMs.
So I put it behind Cloudflare and now it's down. Ho hum.
https://i.ibb.co/qHCJyY7/image.png
I wrote the below to explain to our users what was happening, so apologies if the language is too simple for a HN reader.
- 0630, we switched our DNS to proxy through CF, starting the collection of data, and implemented basic bot protections
- Unfortunately whatever anti-bot magic they have isn't quite having the effect, even after two hours.
- 0830, I sign in and take a look at the analytics. It seems like <SITE NAME> is very popular in Vietnam, Brazil, and Indonesia.
- 0845, I make it so users from those countries have to pass a CF "challenge". This is similar to a CAPTCHA, but CF try to make it so there's no "choosing all the cars in an image" if they can help it.
- So far 0% of our Asian audience have passed a challenge.
I will say one very appealing use of Anubis I'd love to try is using it as a Traefik middleware to protect services running in docker containers.
Edit: To answer my own question, yes: http://www.arijuels.com/wp-content/uploads/2013/09/JB99.pdf
Edit 2: Maybe TLS would be another reasonable place for it?
How?
The other part is just how convenient it is with CF. Easy to configure, plenty of power and cheap compared to the other big ones. If they made their dashboard and permission-system better (no easy way to tell what a token can do last I checked), I'd be even more of a fan.
If Germany's Telekom was forced to peer on DE-CIX, I'd always use CF. Since they aren't and CF doesn't pay for peering, it's a hard choice for Germany but an easy one everywhere else.
Hetzner has the WEAKEST DDoS protection out of ANYTHING out there - Arbor sucks.
Send me your website url and I'll keep it down for DAYS and whenever you cry to hetzner I'll just fry it again, it's that easy and that's why they're the cheapest - because everyone ran away from them back then.
And yet my website is still up today, and has not been down for years.
The first time we switched to Cloudflare which saved us. Even with Cloudflare, the DDoS attempts are still damaging (the site goes down, we use Cloudflare to block the endpoints they're targeting, they change endpoints, etc.) but manageable. Without Cloudflare or something like it, I think it's possible that we'd be out of business.