Activist group Great Firewall Report spotted the outage, which it said disrupted all traffic to TCP port 443 – the standard port used for carrying HTTPS traffic.
“Between approximately 00:34 and 01:48 (Beijing Time, UTC+8) on August 20, 2025, the Great Firewall of China (GFW) exhibited anomalous behavior by unconditionally injecting forged TCP RST+ACK packets to disrupt all connections on TCP port 443,” the group wrote in a Wednesday post.
That disruption meant Chinese netizens couldn’t reach most websites hosted outside China, which is inconvenient. The incident also blocked other services that rely on port 443, which could be more problematic because many services need to communicate with servers or sources of information outside China for operational reasons. For example, Apple and Tesla use the port to connect to offshore servers that power some of their basic services.
Someone should post this in one of the tankie instances. Should be some good content for !meanwhileongrad@sh.itjust.works
Hmmmm I should join Piefed.
Enjoy the freedom of having the likes of Meta and Google pull another Cambridge analytica. Or the freedom of having multi-billion dollar companies like YouTube aggressively push algorithms that steer people down the alt right pipeline. Or the freedom of instagram mechanically and ruthlessly instilling in children as much body dysphoria and low self esteem as possible in the name of profit.
It was literally only two years ago that Meta
wasgot caught promoting racial violence in Myanmar. https://www.amnesty.org/en/latest/news/2022/09/myanmar-facebooks-systems-promoted-violence-against-rohingya-meta-owes-reparations-new-report/Any reasonable person can look at the heinous acts carried out by western tech companies in recent years and realize that the great firewall has been vindicated.
Like clockwork 👌
Same tankie trash as always. Accuse and deflect.
It means lemmy.world was blocked, despite being available in China most of the time
because chinese social media is so much better
Ah yep, there’s the cope I was hoping to see.
Out of the drying pan and into the fire.
Hahahahhahaha!..…hahahahahaha! Thanks, I needed that.
No wonder there were so few Chinese sourced hack attempts in my corporate F5 firewall logs last night lol.
it hurt itself in its confusion!
Just testing the big red button is still working. Nothing to see here, no I mean literally nothing to see here!
This is related to China how?
For example, in China the film industry censors LGBT-related films. Filmmakers must resort to finding funds from international investors such as the “Ford Foundations” and or produce through an independent film company.
Good read. Fuck censorship. Fuck the CCP.
Pro tip: Posting in non-relevant places about the controversy you personally find very important - even if you’re right - is counterproductive to the very thing you want changed.
My friend, this post is about China getting cut off from the rest of the word, most likely due to government censorship.
The title of this community is Technology.
It is a PSA about the current steps the US is taking towards similar levels of censorship. This is pretty damn relevant to both the community and the post topic.
I know some people don’t like it, but politics is part of tons of different communities. Even a crafting community would be affected by the current tariffs.
Please refer to my previous comment.
Just as a reminder, you are able to block users if you do not like what they are posting.
Cool, but I hate living in an echo chamber, and worry remaining an ignorant dipshit like most people here, and I also don’t mind reading things that hurt my feelings. So, no.
I don’t like to resort to that, but since you’ve suggested it - yeah, I’ll never hear about your concerns again. Thanks! Good job!
It’s not directly related to China, but it’s relevant to the topic at hand
Anyone know why someone would use port 443 for anything other than https?
Sometimes mandatory web proxies still allow direct connections to port 443 so as to not break https, which in return means as long as your connection is to port 443, that proxy will pass it through without interfering.
I used to run sshd on port 443 for this reason back when I regularly had to work from client networks.
HTTPS may be the official designation for the port, but it is the de facto standard port for TLS. Whatever you want to send over TLS, doesn’t really matter.
HTTPS is just HTTP served over TLS (originally SSL).
Step by step, if you were to analyze a web connection over port 443, you would see that the client first negotiates the TCP connection (via three-way handshake), then TLS, and it’s not till after TLS is established that HTTPS is negotiated.
In that way, it’s kinda wrong to say it’s the HTTPS port. It’s really, nowadays, the TLS port. HTTP is just one of many protocols that can ride on top of it, and when we do that, we call it HTTPS.
To not get blocked by the great firewall
There’s lots of things that transport using HTTPS that aren’t websites in browsers.
Yeah technically anything can run on any ports, we just like to default certain things.
Ssh for example can work on port 2000 or whatever. Port knocking is fun too.
Oh, it’s not even that some other protocol is operating on 443. It’s that the underlying transport is HTTPS, just for something that’s not a website rendered in a browser by the client. Microsoft, for example, used RPC over HTTPS for Outlook connectivity to Exchange for a hot minute.
Ah gotcha. In this case yeah.
Happy cake day!
Some ISPs block other ports, so if you want to host something, that might be your best option.
VPNs, DNS over https (DoH), load balancers via DHCP, encrypted remote procedure calls, TCP pipes via gsocket.
I could go on.
websockets
