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fabioyy

119 karma · joined November 9, 2013

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fabioyy··on A PCB business card with a batteryless LED, powered by the phone that taps it
website is down
fabioyy··on Sleepwalker: Passive Backdoor with Its Own Command Language
in my script kid days, ( 30 years ago ) I did something similar for linux , using raw sockets and I think with ETH_P_ALL. embedding into a an already existing regular linux process ( recompiling the source code ) the problem was high cpu usage of the process when network usage was intensive. of course it did't survive when the OS updated the program.
fabioyy··on DocumentDB – a MongoDB compatible open-source database
can't believe that is not intentional. fishy
fabioyy··on Aspartame is not that bad? (2022)
migraine trigger for me too
fabioyy··on AirSnitch: Demystifying and breaking client isolation in Wi-Fi networks [pdf]
macsec can encrypt data in ethernet for lan, maybe it can solve this
fabioyy··on Static Web Hosting on the Intel N150
The numbers seems to be too much near 65535 to be a coincidence.

are you making the request from a single IP address source? are you aware of the limit of using the same source IP address for the same destination IP address ( and port )? ( each connection can have only a unique source address and source port to the destination, maxing out in source 65535 ports ) for the same destination

fabioyy··on Using FreeBSD to make self-hosting fun again
what about docker/containerd compatibility? is now possible to run on freebsd?
fabioyy··on Ask HN: How to stop an AWS bot sending 2B requests/month?
no need to mess with the kernel, block on the local machine firewall outgoing RST packet ,create a program that reads raw socket for incoming SYN and answer the syn/ack). but anyway, this technique will not differentiate legitimate connections.
fabioyy··on YouTube is a mysterious monopoly
since google is tier 1 network. does anyone knows if they pay for bandwidth for serving youtube?
fabioyy··on Python has had async for 10 years – why isn't it more popular?
fork is extremely heavy, threads are way lighter, but still opening thousands of threads can become a problem. opening a thread just to wait for a socket operation don't make sense. and the low level requirements to use ( select/iopool syscalls ) is hard. coroutines of async/await solve this problem.
fabioyy··on AWS CEO says using AI to replace junior staff is 'Dumbest thing I've ever heard'
I do not agreed. Its was not even worth without llm. Junior will always take a LOT of time from seniors. and when the junior become good enough, he will find another job. and the senior will be stuck in this loop.

junior + llm, it even worse. they become prompt engineers

fabioyy··on Ask HN: Dangers of Unsecured WiFi?
unless you accepted an invalid https certified popup, its not possible, even on public wifi. or maybe you still type: http:// instead of https://, and then is easy to fake a dns response to point to a clone site
fabioyy··on SSDs have become fast, except in the cloud
it is not worth to use cloud if you need a lot of iops/bandwidth

heck, its not worth for anything besides scalability

dedicated servers are wayyyy cheaper

fabioyy··on How to build a IP geolocation database from scratch?
a long time ago i build a project like that but instead of relying on whois. i did a traceroute to every ipv4 address avaliable. several router hops, have a reverse dns that uses some names that include city codes, (like airport codes ). most providers have a single hop for a city. so its easy to correlate the latest router hop to a city.
fabioyy··on Ask HN: IP cameras that don't require an app or internet?
A little off topic, i don´t know your use case, but you can use an old phone as webcam, they will be better in quality than any IP camera.

A little example using my old galaxy s11. ( its connected to a pc using usb, airplane mode, no internet )

https://www.youtube.com/watch?v=2CDE7PsLwzk

fabioyy··on Ask HN: Do you measure and/or mitigate CO2 in your living space?
there is a ton of devices that do that on amazon. here ( Brazil/beach ) i get only 300-400 ppm, ps: i dont use gas to Cook/shower. everything is elétric
fabioyy··on Tell HN: Google Cloud suspended our production projects at 1am on Saturday
i was BANNED from hetzner when i forgot to Pay ( it has been almost 10 years ).at the time i offer to Pay any debts, but they said that i was not welcome anymore.
fabioyy··on Ask HN: Hetzner banned me with no explanation. What can I do?
They also banned me because I forgot to pay one month ( and my contact email was one that I didn’t use anymore ). After a year I tried to resubscribe and they denied me, ( I offered to pay any debt , but they refuse )
fabioyy··on Husky, Datadog's Third-Generation Event Store
same here

one mistake in my logs, and my account was due > 10k us$. until a manager contact-me after a month. It appears to be a method to force a "sales" call.

A simple indicator of how much you are due ( daily ) would solve this kind of problem. ( google/reddit shows that this kind of problem happens all the time in the last 2 years )

fabioyy··on Wireless is a trap (2020)
anyone have tried to use fiber? is there a fiber to ethernet conversor? ( to connect the playstation for example )
fabioyy··on Timescale raises $110M Series C
I have done no optimization, no WAL partition, no slave (yet). i'm just using a single t3a.xlarge Aws instance with 1500 IOPS (EBS Volume).

we use 1500IOPS just to speed up our read-only jobs and reports.

i'm just using AWS EBS snapshot feature ( every hour ) for backup.

fabioyy··on Timescale raises $110M Series C
i'm using timescale to store sensor/gps log ( 50 inserts/s - 24/7 ). after 2 months still very good )
fabioyy··on Serving Netflix Video at 400Gb/s on FreeBSD [pdf]
have you considered dpdk?
fabioyy··on EU to make Bitcoin traceable, ban anonymous crypto wallets
everytime bitcoin reaches a High value.. some bad news appears on the internet..
fabioyy··on How to circumvent Sci-Hub ISP block
only if it was possible to use chia to store content.. it would be a game changer
fabioyy··on Teardown of a PC Power Supply
dude, the heart is in the middle of your chest.
fabioyy··on NNCP: Lossless Data Compression with Neural Networks (2019)
Fabrice Bellard is a legend!
fabioyy··on Extreme HTTP Performance Tuning
did you try DPDK?
fabioyy··on Ethereum will use around 99.95% less energy post merge
people with money can buy mining factories and make decisions anyway.
fabioyy··on 400-year-old Greenland shark ‘longest-living vertebrate’ (2016)
and we killed
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