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Networking & Internet

The most popular blog posts about networking & internet on Hacker News. 85 posts.

2024
32

About the Tailscale.com outage on March 7, 2024

On March 7, 2024, tailscale.com was unavailable for approximately 90 minutes due to an expired TLS certificate. We were able to identify and address the issue quickly, and the downtime was mostly limited to our marketing materials and documentation; still, we would like to explain exactly what happened, what the…

36

The Nearest Neighbor Attack

In early February 2022, notably just ahead of the Russian invasion of Ukraine, Volexity made a discovery that led to one of the most fascinating and complex incident investigations Volexity had ever worked. The investigation began when an alert from a custom detection signature Volexity had deployed at a customer site…

40

We build X.509 chains so you don't have to

For the past eight months, Trail of Bits has worked with the Python Cryptographic Authority to build cryptography-x509-verification, a brand-new, pure-Rust implementation of the X.509 path validation algorithm that TLS and other encryption and authentication protocols are built on. Our implementation is fast…

55

New standards for a faster and more private Internet

Cloudflare's customers can now take advantage of Zstandard (zstd) compression, offering 42% faster compression than Brotli and 11.3% more efficiency than GZIP. We're further optimizing performance for our customers with HTTP/3 prioritization and BBR congestion control, and enhancing privacy through Encrypted Client…

58

Improving Network Performance with Linux Flowtables

We’re building an open source alternative to AWS. For IPv4 assignment and firewall rules, we use Linux’s Netfilter / Nftables. This subsystem provides a powerful way to handle packets addressed to the host. We recently came across flowtables - a network acceleration feature in the Linux kernel that works like a…