Hacker News with Generative AI: Networking

Life pro tip: macOS migration can run over thunderbolt (xeiaso.net)
Wifi is "it depends" fast. Ethernet is either one or 10 gigabits fast. MacBooks come with very high data rate thunderbolt ports, so why not use them for migration?

macOS, Migration, Networking, Data Transfer

15 points by impish9208 1 day ago | 6 comments

Intel's Tofino P4 Software Is Now Open Source (p4.org)
We are excited to usher in the dawn of a new era for the P4 programming language. For many years, the Tofino family of programmable Ethernet switches, powered by P4, has represented the cutting edge of network innovation. Tofino’s unprecedented levels of programmability have enabled organizations to shape their networks like never before. But there was always one limitation: the software driving this groundbreaking hardware remained closed source. Today, that changes.

Network Programming, Open Source, Hardware, Networking, Software

200 points by ram_rattle 2 days ago | 70 comments

Rsync 3.4.0 Released (samba.org)

New Releases, Software, Networking

7 points by blueflow 3 days ago | 0 comments

Rsync: Vulnerabilities (openwall.com)
Two independent groups of researchers have identified a total of 6 vulnerabilities in rsync. In the most severe CVE, an attacker only requires anonymous read access to a rsync server, such as a public mirror, to execute arbitrary code on the machine the server is running on.

Security, Vulnerabilities, Software, Networking

31 points by todsacerdoti 3 days ago | 3 comments

Providing Precise Time over the Network (lwn.net)
Handling time in a networked environment is never easy.

Networking, Time Management, Synchronization

5 points by voxadam 4 days ago | 0 comments

What the TP-Link Ban in the US Means for You (thedefendopsdiaries.com)
The potential ban on TP-Link routers in the United States has sparked significant concern and debate, reflecting broader geopolitical tensions and cybersecurity challenges.

Cybersecurity, Geopolitics, Networking, US Government, Technology

25 points by tuzzmaniandevil 5 days ago | 37 comments

IP addresses through 2024 (potaroo.net)
Time for another annual roundup from the world of IP addresses. Let’s see what has changed in the past 12 months in addressing the Internet and look at how IP address allocation information can inform us of the changing nature of the network itself.

IP Addresses, Internet, Networking

162 points by DanAtC 6 days ago | 84 comments

Linux Routing Fundamentals (sdn.clinic)
Linux has been a first class networking citizen for quite a long time now. Every box running a Linux kernel out of the box has at least three routing tables and is supporting multiple mechanisms for advanced routing features from policy based routing (PBR), to VRFs(-lite), and network namespaces (NetNS). Each of these provide different levels or separation and features, with PBR being the oldest one and VRFs the most recent addition (starting with Kernel 4.3).

Linux, Networking, Routing, Security, Operating Systems

58 points by mariuz 10 days ago | 6 comments

Preventing conflicts in authoritative DNS config using formal verification (cloudflare.com)
Over the last year, Cloudflare has begun formally verifying the correctness of our internal DNS addressing behavior — the logic that determines which IP address a DNS query receives when it hits our authoritative nameserver.

DNS, Formal Verification, Security, Networking, Cloud Computing

64 points by rscho 10 days ago | 3 comments

Building Ultra Long Range Toslink (benjojo.co.uk)
This post is a textual version of a talk I gave at The 38th Chaos Computer Congress at the end of 2024. You can watch the talk that was recorded by the wonderful C3VOC team below if that’s your preferred medium:

Electronics, Networking, Hardware, Audio

278 points by ingve 11 days ago | 118 comments

Consumer-grade routers on puny power supplies (2024) (apnic.net)
Around a decade ago, I proudly joined the — then still small — ranks of people in New Zealand with a solar photovoltaics system on their roof.

Consumer Electronics, Networking, Power, Sustainability

84 points by fanf2 11 days ago | 55 comments

HTTP/2 Flow Control Deadlock (ycombinator.com)
Our real-world experience with flow control deadlock that manifested as infinite HTTP request hangs.

HTTP, Networking, Performance, Debugging

5 points by samlightfoot 12 days ago | 0 comments

IPv6-only Network based on Jool (taoshu.in)
In this post, I will share experiences of my experiment of how to setting up the IPv6-only network on Linux using the Jool1.

IPv6, Networking, Linux, Jool

82 points by unclet 12 days ago | 35 comments

A curated list of WireGuard tools, projects, and resources (github.com/cedrickchee)
A curated list of WireGuard tools, projects, and resources.

Networking, WireGuard, Tools, Resources

5 points by sea-gold 12 days ago | 0 comments

There are different sorts of WireGuard setups with different difficulties (utoronto.ca)
I've now set up WireGuard in a number of different ways, some of which were easy and some of which weren't. So here are my current views on WireGuard setups, starting with the easiest and going to the most challenging.

Networking, WireGuard, Security, Tutorials

11 points by srijan4 12 days ago | 1 comments

How NAT Traversal Works (2020) (tailscale.com)
We covered a lot of ground in our post about How Tailscale Works. However, we glossed over how we can get through NATs (Network Address Translators) and connect your devices directly to each other, no matter what’s standing between them. Let’s talk about that now!

Networking, Security, Tailscale, NAT, 2020

408 points by hhthrowaway1230 13 days ago | 89 comments

GPON FTTH networks (in)security (2016) (pierrekim.github.io)
GPON FTTH network is the future: GPON FTTH (Fiber To The Home) is very popular because it is cheap and allows people to download legal Video On Demand damn fast. Everybody wants GPON FTTH at home, you, me, my dog and my neighbors. In fact, you are sharing 2.5gbps of downstream with others clients (but it is still fast).

Networking, Security, Fiber Optics

58 points by pabs3 13 days ago | 16 comments

Multi-Path TCP: revolutionizing connectivity, one path at a time (cloudflare.com)
The Internet is designed to provide multiple paths between two endpoints. Attempts to exploit multi-path opportunities are almost as old as the Internet, culminating in RFCs documenting some of the challenges. Still, today, virtually all end-to-end communication uses only one available path at a time.

Networking, TCP, Internet, Cloud Computing, Performance

17 points by da768 14 days ago | 1 comments

Show HN: An SSH based utility to transfer pipes across machines – beam (github.com/ksdme)
transfer pipes and files from one computer to another over ssh

SSH, Networking, Data Transfer

28 points by ksdme9 14 days ago | 31 comments

Cloudflare Talks Up Multi-Path TCP but Dings Linux's Less Than Ideal Support (phoronix.com)
The folks at Cloudflare have published another great engineering blog post with this time covering Multi-Path TCP (MPTCP) as a very interesting addition to the TCP spec. But there they acknowledge the less than ideal Linux support especially on the client side.

Networking, Linux, Cloudflare, TCP, Software

4 points by ksec 14 days ago | 0 comments

Harnessing 3200 Gbps Network: A Journey with RDMA, EFA, and Libfabric (le.qun.ch)
Earlier this year, I had the fortune of joining Perplexity AI, where I finally got to use servers with the most powerful configuration—AWS p5 instances equipped with 8 NVIDIA H100 GPUs interconnected via NVSwitch. What excited me even more was the ultra-high-speed 3200 Gbps network between servers. I thought it would be incredibly cool if I could write a program that could utilize this full 3200 Gbps bandwidth!

Networking, Programming, Artificial Intelligence, AWS

11 points by abcdabcd987 15 days ago | 0 comments

Saving 100+ Desk Phones from E-Waste Doom with TFTP and a Simpler PBX (difuse.io)
Saving 100+ Desk Phones from E-Waste Doom with TFTP and a Simpler PBX

E-waste, Telephony, Technology, DIY, Networking

19 points by arch1e 15 days ago | 0 comments

Mptcp: Revolutionizing connectivity, one path at a time (cloudflare.com)
The Internet is designed to provide multiple paths between two endpoints. Attempts to exploit multi-path opportunities are almost as old as the Internet, culminating in RFCs documenting some of the challenges. Still, today, virtually all end-to-end communication uses only one available path at a time.

Networking, Internet Protocols, Performance Optimization, Multipath TCP

7 points by majke 15 days ago | 4 comments

A brief history of the RFC format (2021) (apnic.net)
Geoff Huston recently discussed the processes behind putting together an RFC, and the history of why they came to be, so today we’re going to explore another aspect of what makes RFCs the way they are — their plain text format.

Networking, History, Technical Standards, RFC, Internet

3 points by xeonmc 15 days ago | 0 comments

Diagnosing an Unusual WiFi Issue (2020) (ryuuta.net)
Late last year, I started experiencing some unusual intermittent connection issues on my Desktop.

Networking, Troubleshooting, Wi-Fi

271 points by llimllib 16 days ago | 97 comments

Show HN: connet – A P2P reverse proxy with NAT traversal (github.com/connet-dev)
connet is a peer-to-peer reverse proxy for NAT traversal. It is inspired by ngrok, frp, rathole and others.

Networking, Reverse Proxy, Open Source, Peer-to-Peer

130 points by Ingon 16 days ago | 29 comments

iKOOLCORE R2 Max 10GbE Mini PC Review (cnx-software.com)
iKOOLCORE R2 Max is an Alder Lake-N mini PC, server, and soft router equipped with two 10GbE and two 2.5GbE ports and offered with either an Intel Processor N100 quad-core CPU, or a more powerful Intel Core i3-N305 octa-core processor.

Hardware, Mini PCs, Networking, Reviews

4 points by teleforce 16 days ago | 0 comments

Diving into the world of Linux WiFi drivers (inconsistentrecords.co.uk)
Welcome to 2025

Linux, WiFi, Operating Systems, Networking

21 points by circadian 16 days ago | 1 comments

Open sourcing h3i: a command line tool and library for low-level HTTP/3 (cloudflare.com)
h3i is a binary command line tool and Rust library designed for low-level testing and debugging of HTTP/3, which runs over QUIC. h3i is free and open source as part of Cloudflare's quiche project.

HTTP/3, QUIC, Open Source, Networking, Rust

4 points by sharjeelsayed 16 days ago | 0 comments

Production Twitter on One Machine? 100Gbps NICs and NVMe Are Fast (thume.ca)
In this post I’ll attempt the fun stunt of designing a system that could serve the full production load of Twitter with most of the features intact on a single (very powerful) machine.

Twitter, Networking, Hardware, Performance, Systems Architecture

12 points by hhthrowaway1230 17 days ago | 1 comments