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Running your own secure communication service with Matrix and Jitsi
Matrix, the open protocol for secure decentralised communications
Topics /
Networking & Internet
The most popular blog posts about networking & internet on Hacker News. 1,406 posts.
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Sen. Wyden Confirms Cell-Site Simulators Disrupt Emergency Calls
Sen. Ron Wyden has sent a letter to the U.S. Department of Justice concerning disruptions to 911 emergency services caused by law enforcement’s use of cell-site simulators (CSS, also known as IMSI catchers or Stingrays). In the letter, Sen. Wyden states that:Senior officials from the Harris...
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The New Internet
Tailscale's CEO, Avery Pennarun, explores the future of the internet, discussing the evolution of networking, the issues with today's complex systems, and how Tailscale is simplifying connectivity for developers with a new, more efficient approach. Discover the vision for a New Internet.
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Bitchat for Gaza – messaging without internet
Bitchat is a new messaging app that allows users to chat securely with or without internet access. Download it today via the App Store or Google Play store to begin communicating safely, even when connectivity disappears. Why Bitchat is needed Palestinians are dependent on Israel for their access to electricity,
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Possible upcoming attempts to disable the Tor network
The Tor Project has learned that there may be an attempt to incapacitate our network in the next...
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OpenAI’s WebRTC problem
Media over QUIC: There are ways to do voice AI without being traumatized by WebRTC.
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Gas Leak in the Baltic Sea
After the three gas leaks on the Nord Stream gas pipelines in the Baltic Sea, the Danish Defence deployed the frigate Absalon and the pollution control vessel Gunnar Thorson, as well as a helicopter capacity.
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Cloudflare servers don't own IPs anymore so how do they connect to the internet?
In this blog we'll discuss how we manage Cloudflare IP addresses used to retrieve the data from the Internet, how our egress network design has evolved, how we optimized it for best use of available IP space and introduce our soft-anycast technology
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Critical Bluetooth vulnerability in Android
On November 3rd, 2019, we have reported a critical vulnerability affecting the Android Bluetooth subsystem. This vulnerability has been assigned CVE-2020-0022 and was now patched in the latest security patch from February 2020. The security impact is as follows:
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One week of Libera Chat
The state of the network after one week of operation.
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Let's Encrypt now fully supports IPv6
Let’s Encrypt is happy to announce full support for IPv6. As IPv4 address space is exhausted, more and more people are deploying services that are only reachable via IPv6. Adding full support for IPv6 allows us to serve more people and organizations, which is important if we’re going to encrypt the entire Web. IPv6 is…
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QUIC and HTTP/3 Support Now in Firefox Nightly and Beta
Support for QUIC and HTTP/3 is now enabled by default in Firefox Nightly and Firefox Beta. HTTP/3 will be available by the end of May.
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Native Matrix VoIP with Element Call
Hopefully in-person meet-ups will prove much easier in 2022 - but, there’s still a need for video calls, so let’s face it, they’re here to stay. This makes it really exciting to present Element Call: the world’s first decentralised voice and video conferencing app powered entirely
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The Day the Telnet Died
On January 14, 2026, global telnet traffic observed by GreyNoise sensors fell off a cliff. A 59% sustained reduction, eighteen ASNs going completely silent, five countries vanishing from our data entirely. Six days later, CVE-2026-24061 dropped. Coincidence is one explanation.
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Cloudflare crawl endpoint
Browser Rendering's new /crawl endpoint lets you submit a starting URL and automatically discover, render, and return content from an entire website as HTML, Markdown, or structured JSON.
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VPN location claims don't match real traffic exits
17 out of 20 popular VPNs exit traffic from different countries than they claim. Dig into what that means and why it matters in our VPN report.
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JIT WireGuard
Our fancy WireGuard setup was accumulating stale peers. Here's what we did about it.
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Shutting down our public encrypted DNS
Mullvad has operated public encrypted DNS (DoH) servers since 2022. They are unnecessary when using Mullvad VPN — traffic is already encrypted and Mullvad VPN's internal DNS handles all queries.
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Our User-Mode WireGuard Year
For better or worse, flyctl isn't boring. Here's why.
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100 Gbps achieved from space to Earth
MIT Lincoln Laboratory, in partnership with NASA Goddard Space Flight Center, built and designed a communications payload, TBIRD, which is demonstrating space-to-ground laser communications at unprecedented data rates.
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Apple TV, now with more Tailscale
Learn how Apple TV now supports Tailscale with tvOS 17, enabling secure remote networking, media streaming, and exit node functionality. Transform your Apple TV into a powerful networking tool today!
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Rocketlab acquires Iridium
Unites Rocket Lab's leading launch and satellite manufacturing capabilities with Iridium's global network, spectrum, and experience to unlock critical space applications. Adds material revenue scale and is significantly accretive to Rocket Lab's cash flow generation and profitability.
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More details about the October 4 outage
Now that our platforms are up and running as usual after yesterday’s outage, I thought it would be worth sharing a little more detail on what happened and why — and most importantly, how we’re lear…
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Unifi Travel Router
Take your UniFi network anywhere. The UniFi Travel Router recreates your full network environment on power up, with flexible uplinks, instant policies, and seamless device connectivity.
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Technology preview: Private contact discovery for Signal
At Signal, we’ve been thinking about the difficulty of private contact discovery for a long time. We’ve been working on strategies to improve our current design, and today we’ve published a new private contact discovery service. Using this service, Signal clients will be able to efficiently and s...
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Tailscale Peer Relays is now generally available
Work around hard NATs and tricky networks with production-grade connectivity nodes you control