The latest blog posts to take off on Hacker News. 1,615 posts.
For many using Unix-derived systems today, we take for granted that /some/path and /some/path/ are the same. Most shells will even add a trailing slash for you when you press the Tab key after the name of a directory or a symbolic link to one.
Cloudflare Tunnel is a cool little product Cloudflare offers to essentially give your computer a public IP address. Getting a packet from point A to point B is Linux's bread and butter. Why not just use it?
I’m not sure if they realize it yet, but Tailscale seems to work extremely well for polycules. Each user can have their own single-user Tailnet and explicitly share specific machines with other people. Both parties have to consent to sharing a device; either party can revoke this consent. The device owner can further…
Ngrok is a fantastic tool for creating a secure tunnel from the public web to a machine behind NAT or a firewall. Sadly, it costs money and it’s proprietary. If you’re a developer, odds are that you’re already renting a server in the public cloud, so why not roll your own ngrok?
When I was working at AWS, around 2017 we started getting excited pitches from companies who wanted to be part of the 5G build-out, saying that obviously there’d be lots of opportunities for public-cloud providers. But I never walked away convinced. Either I didn’t believe the supposed customers really needed what 5G…
I haven't written for a bit, in part because I am currently on vacation in Mexico. Well, here's a short piece about some interesting behavior I've noticed here.
traceroute vs mtr When a packet travels across the Internet, it travels through multiple routers. The traceroute and mtr tools can be used to identify the routers a packet passes through between you and a given destination IP address. traceroute is a one-shot sort of tool whereas mtr runs and agg
Code level discussion of web scraping, gray hat automation, growth hacking and bounty hunting
One of the unexpected 1 outcomes of the Russian invasion in Ukraine is a large increase in nefarious access attempts to servers under my control, not necessarily appearing to arise from Russian IP addresses. There are the usual attempts at brute-forcing SSH access, for instance, but also a flurry of malevolent HTTP(S)…
There are a bunch of reasons to launch an onion site, and a bunch of benefits, all of which have provided value to platforms such as Facebook, the BBC or NYT Onions. The first benefits are authenti…
------ Update 03/12/2022 Reuters has published new information on this incident, which initially matches the proposed scenario. You can find...
This post ended up being incredibly long comprehensive. I’m afraid that many people won’t read enough to get everything that’s important, so here are the key points:
When you hear the term, you should picture an hourglass with M things on one side, N on the other, and an important concept in the middle.
Gigabit ethernet has been around for a long time, it’s so ubiquitous that there is a very strong chance that if you have a RJ-45 port on your computer, it’s going to be a gigabit ethernet network interface.
You may think this is an easy task but let’s find out. One would expect such functionality in a web interface …
The Network Time Protocol (NTP) is a system for synchronizing the clocks of hosts and clients across the Internet. NTP is a protocol intended to synchronize all computers participating in the network to within a few milliseconds of Coordinated Universal Time (UTC). The core of the protocol is NTP’s clock discipline…
The orange site is currently discussing an article about Server-Sent Events, especially as compared with WebSockets (and the emerging WebTransport). Both the article and discussion are well-informed, but I think they miss out on one aspect that has fairly deep implications.
How would the current internet function when you're on a native IPv6 host without any IPv4 instead of using any of the IPv4 workarounds? Find out with a few firewall rules!
I have been playing with some LTE recordings to brush up my knowledge, since it isn’t a protocol I’m very familiar with. I’m specially interested in understanding the structure and properties of all the pilot signals. Textbooks and documentation are great, but nothing beats getting your hands dirty with some IQ…
It’s an established fact on the internet that we have ran out of IP(v4) addresses , and we are starting to see the pressure on obtaining IPv4 space. For example if you want to get a /24 block from RIPE NCC when you sign up as a member, then you are currently looking at a 2 month wait for a recycled IPv4 /24 block .
This story explores some concepts in computer networking, inspired by Michael Nielsen’s idea of discovery fiction . Code samples can also be found in this repo . Excerpts use openbsd-flavoured netcat on Debian Linux; behviour and IPv6 support may vary by version.
A quick explanation of the differences between network failures most commonly observed in day to day operatoins. And no, it's not (always) DNS.
WebSockets are the most used technology for real-time web apps. However, Server Sent Events (SSE) are a simpler alternative that is often superior.
SSH to machines in private networks using an SSH key, from anywhere in the world, using Cloudflare Tunnel.
What if you could host a web service with no ports exposed? With Cloudflare Tunnel, you can!
If you got shuned by the society not because of what you did but what your neighbor did, you will cry bloody injustice. This is exactly what is happening in SPAM blacklisting.
