Hacker News with Generative AI: Networking

Negotiating PoE+ Power in the Pre‑Boot Environment (roderickkhan.com)
Solving a boot-time power challenge on PoE+ x86 systems by creating our own UEFI app to handle LLDP power negotiation at the firmware level, allowing our machines to request higher power from network switches before the OS loads.
Hardware, Networking, Firmware, UEFI, Boot Process
220 points by pietrushnic 31 days ago | 71 comments
NVLink Fusion: Embrace, Extend, Extinguish (fabricatedknowledge.com)
I wrote about the three-headed hydra of Nvidia a year or two ago. Hardware, CUDA, and networking. At the time, the entire investment community’s focus was on the unbeatable CUDA moat, and I explained that Networking, too, was underrated.
Nvidia, Hardware, Networking, Artificial Intelligence
14 points by zdw 31 days ago | 0 comments
Show HN: Malai – securely share local TCP services (database/SSH) with others (malai.sh)
malai-0.2.5 is out now! It brings a new feature to share your local TCP server with the world!
Software, Networking, Security
117 points by amitu 31 days ago | 63 comments
BGP handling bug causes widespread internet routing instability (benjojo.co.uk)
At 7AM (UTC) on Wednesday May 20th 2025 a BGP message was propagated that triggered surprising (to many) behaviours with two major BGP implementations that are often used for carrying internet traffic.
Internet, Networking, Security, BGP
336 points by robin_reala 31 days ago | 160 comments
TCP/IP on Windows for Workgroups 3.11 in 2025 under QEMU (uninformativ.de)
Just taking some notes here, so I won't forget. And it's always nice to see that old GUI, hence the large amount of screenshots.
Networking, Operating Systems, Virtualization, Legacy Software, History
16 points by zdw 33 days ago | 4 comments
Show HN: Fwtui – A terminal UI for managing UFW (built with Bubble Tea) (github.com/Beny406)
fwtui is a terminal-based UI built in Go to help you manage UFW (Uncomplicated Firewall) rules with ease.
Security, Open Source, Networking
24 points by beny406 33 days ago | 2 comments
From Hosts.txt to Modern Internet Infrastructure (axonshield.com)
The development of DNS demonstrates an impressive journey from its initial basic form into a modern distributed system which provides high resilience.
DNS, Internet Infrastructure, History, Networking, Technology
9 points by dc352 34 days ago | 3 comments
No Internet Access? SSH to the Rescue (isc.sans.edu)
This quick diary is a perfect example of why I love Linux (or UNIX in general) operating system. There is always a way to "escape" settings imposed by an admin...
Linux, Security, Networking, Remote Access
8 points by indigodaddy 35 days ago | 0 comments
"Free" VPNs much do route other peoples' traffic through your system (infosec.exchange)
Security, Privacy, VPNs, Internet, Networking
5 points by gpi 35 days ago | 0 comments
Recreating a video from raw captured network traffic (2023) (thesloth.me)
A few days ago i stumbled upon the idea to recreate a video from traffic captured in PCAP file. It may be a common knowledge that this is possible, but it felt like the coolest thing i’ve done in a while. If you’re interested on how it was done continue reading.
Computer Science, Networking, Video Editing
8 points by hiAndrewQuinn 35 days ago | 0 comments
Realtek's $10 tiny 10GbE NIC will hit motherboards soon (tomshardware.com)
Networking, Hardware, Technology, Computer Components
53 points by Tuldok 35 days ago | 45 comments
Someone randomly joined my Tailscale network (reddit.com)
Someone just randomly joined my Tailnet
Security, Networking, Tailscale
15 points by Lukas_Skywalker 36 days ago | 3 comments
Someone just randomly joined my Tailnet (reddit.com)
I think I became an owner of an organisation I don't own the domain of.
Networking, Security, Tailnet, Reddit
36 points by aborsy 36 days ago | 4 comments
WiFi: "beamforming" only begins to describe it (2014) (apenwarr.ca)
Wifi: "beamforming" only begins to describe it
Networking, Wireless Technology, Technology
13 points by Tomte 36 days ago | 0 comments
Apartment living to get worse in 5 years as 6 GHz Wi-Fi nears 'exhaustion' (theregister.com)
Rapid growth in Wi-Fi use means the 6 GHZ band’s carrying capacity may soon be exhausted, according to CableLabs, the nonprofit networking think tank run by cable television operators.
Wi-Fi, Technology, Connectivity, Networking
6 points by rntn 36 days ago | 0 comments
Direct TLS can speed up your connections (marc-bowes.com)
A few months ago, one of my Aurora DSQL teammates reported a curious finding.
Security, Networking, Performance
91 points by tanelpoder 36 days ago | 48 comments
Should I Block ICMP? (shouldiblockicmp.com)
Many network administrators feel that ICMP is a security risk, and should therefore always be blocked at the firewall. It is true that ICMP does have some security issues associated with it, and that a lot of ICMP should be blocked. But this is no reason to block all ICMP traffic!
Security, Networking, ICMP
122 points by rascul 37 days ago | 96 comments
How to Build an Anycast Network (render.com)
Serving traffic as efficiently as possible, regardless of where it originates, is a critical requirement at Render. One answer to this challenge is to deploy a global fleet of servers to create an anycast network. What is an anycast network? What is it good for? How can you build your own? This post will answer all of these questions, but we’ll first need some background on the building blocks of global networking.
Networking, Anycast, Render, Cloud Infrastructure, Software Development
5 points by reynaldi 39 days ago | 0 comments
The lack of a good command line way to sort IPv6 addresses (utoronto.ca)
A few years ago, I wrote about how 'sort -V' can sort IPv4 addresses into their natural order for you.
Command Line, IPv6, Networking, Sorting
37 points by zdw 39 days ago | 52 comments
A Critical Look at "A Critical Look at MCP." (docs.mcp.run)
I came across this post shortly after finishing support for the HTTP Streaming transport on mcp.run. After a week or so of banging my head against the matrix of OAuth RFC support and client transport support, I should be in a sympathetic frame of mind to receive a critique of the protocol. And yet! Here I am, defending MCP. After all, the good that interfaces do oft lay interred with their blemishes.
Networking, APIs, Software
33 points by palmfacehn 41 days ago | 13 comments
Upgrading my 25gbit internet router to VyOS (sschueller.github.io)
It has been a while since I setup my original router for my 25gbit internet connection. I decided it was time to upgrade but since I have some services running I did not want to be down for too long and purchased some new hardware which would allow me to experiment with VyOS without effecting my current setup.
Networking, VyOS, Hardware, Internet
4 points by sschueller 42 days ago | 2 comments
Beej's Guide to Network Concepts (beej.us)
Networking, Programming, Guides, Tutorials
7 points by Tomte 42 days ago | 1 comments
Jetrelay: A high-performance ATproto relay in 500 LOC (asayers.com)
This post explains the design of jetrelay, a pub/sub server compatible with Bluesky’s “jetstream” data feed. Using a few pertinent Linux kernel features, it avoids doing almost any work itself. As a result, it’s highly efficient: it can saturate a 10 Gbps network connection with just 8 CPU cores.
Networking, Open Source, Performance Optimization, Software
16 points by todsacerdoti 42 days ago | 5 comments
Setenv() isn't threadsafe and even safe Rust didn't save us (geldata.com)
We're in the process of porting a significant portion of the network I/O code in EdgeDB from Python to Rust, and we've been learning a lot of very interesting lessons in the process.
Rust, Programming Languages, Networking, Software Development, Debugging
4 points by fanf2 42 days ago | 1 comments
Forget IPs: using cryptography to verify bot and agent traffic (cloudflare.com)
With the rise of traffic from AI agents, what’s considered a bot is no longer clear-cut.
Cryptography, Artificial Intelligence, Cybersecurity, Networking
80 points by todsacerdoti 43 days ago | 26 comments
Show HN: Kasimba – Simple macOS app that converts Windows paths to SMB addresses (github.com/taranntell)
A simple macOS application that converts Windows paths to SMB addresses. Useful for Mac users who need to access Windows network shares.
Mac, Software, Networking, Windows
8 points by bobnarizes 44 days ago | 5 comments
Rustls Server-Side Performance (memorysafety.org)
In past years, the Rustls project has been happy to receive substantial investments from the ISRG. One of our goals has been to improve performance without compromising on safety. We last posted about our performance improvements in October of 2024, and we're back to talk about another round of improvements.
Rust, Performance, Security, Networking, Open Source
171 points by jaas 45 days ago | 60 comments
The FreeBSD-native-ish home lab and network (antranigv.am)
For many years my setup was pretty simple: A FreeBSD home server running on my old laptop. It runs everything I need to be present on the internet, an email server, a web server (like the one you’ve accessed right now to see this blog post) and a public chat server (XMPP/Jabber) so I can be in touch with friends.
FreeBSD, Home Server, Networking, Email Servers, Web Servers
4 points by bediger4000 45 days ago | 0 comments
Tailscale 4via6 – Connect Edge Deployments at Scale (tailscale.com)
Tailscale lets you connect anything to anything — securely. But real-world deployments often come with messy networks: overlapping IPs, double NAT, and strict firewalls.
Networking, Security, Cloud Computing, Software, Edge Computing
120 points by tiernano 46 days ago | 38 comments
Show HN: MMORPG prototype inspired by World of Warcraft (github.com/nickyvanurk)
Everwilds is a prototype and reference project that demonstrates how MMORPGs like World of Warcraft are programmed, focusing primarily on networking and netcode architecture.
MMORPGs, Game Development, Networking
28 points by nickyvanurk 46 days ago | 9 comments