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New
The latest blog posts to take off on Hacker News. 3,021 posts.
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Game servers: UDP vs TCP
When writing networked games, the question of UDP vs TCP will eventually come up. Typically you will hear people say things like: “Unless you’re doing action games, you can use TCP̶…
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As Deadly as a DDoS: ICANN Unleashes the Whois Accuracy Program
More effective than a botnet, more sweeping than a Denial-of-Service attack, ICANN has devised a deadly Weapon of Mass Destruction that can instantly render a entire online presence persona-non-grata regardless of how much redundancy, mitigation muscle-power or firewalls a hapless defender has deployed, this latest…
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Russia Blocks Access to Major Independent News Sites
Russia's government has escalated its use of its Internet censorship law to target news sites, bloggers, and politicians under the slimmest excuse of preventing unauthorized protests and enforcing house arrest regulations. Today, the country's ISPs have received orders to block a list of major news...
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Venezuela's Internet Crackdown Escalates into Regional Blackout
For the last month, Venezuela has been caught up in widespread protests against its government. The Maduro administration has responded by cracking down on what it claims as being foreign interference online. As that social unrest has escalated, the state's censorship has widened: from the removal...
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TCP/IP over audio
We present a simple to use implementation of networking across ultrasonic frequencies, by making use of Gnuradio and a microphone and speakers. This allows you to use TCP/IP , UDP across an audio link.
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The C10M problem
It's time for servers to handle 10 million simultaneous connections, don't you think? After all, computers now have 1000 times the memory as...
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The C10K problem
It's time for web servers to handle ten thousand clients simultaneously, don't you think? After all, the web is a big place now.
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HTTP 308 Incompetence Expected
Internet History The Internet from every angle has always been a house of cards held together with defective duct tape. It's a miracle tha...
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The New Normal: 200-400 Gbps DDoS Attacks
Over the past four years, KrebsOnSecurity has been targeted by countless denial-of-service attacks intended to knock it offline. Earlier this week, KrebsOnSecurity was hit by easily the most massive and intense such attack yet — a nearly 200 Gbps assault leveraging a simple attack method that industry experts say is…
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The Day We Fought Back: By The Numbers
96,000 calls, 555,000 emails, 245,000 signatures and more. Find out what happened this Tuesday.
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Technical Details Behind a 400Gbps NTP Amplification DDoS Attack
On Monday we mitigated a large DDoS that targeted one of our customers. The attack peaked just shy of 400Gbps. We've seen a handful of other attacks at this scale, but this is the largest attack we've seen that uses NTP amplification.
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Google’s IPv6 Stats Pass 3% Less Than 5 Months After Passing 2%
Wow! The pace of IPv6 deployment is rapidly accelerating! This morning Google’s IPv6 measurements crossed the 3% milestone just under five months from when the 2% milestone was crossed. Prior to that it had taken 11 months to go from 1% to 2%. The growth path is certainly heading in the right direction: To […]
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Mystery signal from a helicopter
I heard a mysterious sound in a Youtube video and started to investigate.
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The Sad State of Mobile XMPP in 2014
blog about networking, cameras, old gear, and xmpp
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TCP backdoor 32764 – how we could patch the Internet (or part of it)
Eloi Vanderbéken recently found a backdoor on some common routers, which is described on his GitHub here. Basically, a process that listens on the 32764 TCP port runs, sometimes accessible from the WAN interface. We scanned the v4 Internet to look for the routers that have this backdoor wild open, and gathered some…
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SSL Labs: Stricter security requirements for 2014
Today, we're releasing a new version of SSL Rating Guide as well as a new version of SSL Test to go with it. Because the...