What’s going on with the Hedge? What am I teaching this coming month? Listen to this short update to find out all the news.
Ian Nightingale published an interesting story of connectivity problems he had in a VXLAN-based campus network. TL&DR: it’s always the MTU (unless it’s DNS or BGP).
The really fun part: even though large L2 segments might have magical properties (according to vendor fluff), there’s no host-to-network communication in transparent bridging, so there’s absolutely no way that the ingress VTEP could tell the host that the packet is too big. In a layer-3 network you have at least a fighting chance…
For more details, watch the Switching, Routing and Bridging part of How Networks Really Work webinar (most of it available with Free Subscription).
On today’s Heavy Networking podcast, Kevin Myers joins us for a whitebox conversation. Kevin helps Internet Service Providers build their networks, and has noticed increased adoption of whitebox switches. Why? Are the problems whitebox solves for these ISPs the same you might have at your company? Should you consider whitebox instead of Cisco, Juniper, or Arista? Maybe…and maybe not.
The post Heavy Networking 650: Whether And How To Adopt Whitebox Switches appeared first on Packet Pushers.
Last year, we demonstrated what we meant by “lightning fast”, showing Pages' first-class performance in all parts of the world, and today, we’re thrilled to announce an integration that takes this commitment to speed even further – introducing Pages support for Early Hints! Early Hints allow you to unblock the loading of page critical resources, ahead of any slow-to-deliver HTML pages. Early Hints can be used to improve the loading experience for your visitors by significantly reducing key performance metrics such as the largest contentful paint (LCP).
Early Hints is a new feature of the Internet which is supported in Chrome since version 103, and that Cloudflare made generally available for websites using our network. Early Hints supersedes Server Push as a mechanism to "hint" to a browser about critical resources on your page (e.g. fonts, CSS, and above-the-fold images). The browser can immediately start loading these resources before waiting for a full HTML response. This uses time that was otherwise previously wasted! Before Early Hints, no work could be started until the browser received the first byte of the response. Now, the browser can fill this time usefully when it was previously sat Continue reading
Christopher Werny covered another interesting IPv6 security topic in the hands-on part of IPv6 security webinar: traffic filtering in the age of dual-stack and IPv6-only networks, including filtering extension headers, filters on Internet uplinks, ICMPv6 filters, and address space filters.
Before we dive into TTP (Template Text Parser), let us first address why we need a text scraping tool in the modern world of APIs and structured data. Here is my opinion:
You would be surprised to know that many commercial tools that do network observability use screen scraping under the hood. So, it is not a bad idea to learn how to do it yourself.
From a network engineer's perspective, there are two popular tools that can be used for screen scraping:
Today, we’re excited to announce Total TLS — a one-click feature that will issue individual TLS certificates for every subdomain in our customer’s domains.
By default, all Cloudflare customers get a free, TLS certificate that covers the apex and wildcard (example.com, *.example.com) of their domain. Now, with Total TLS, customers can get additional coverage for all of their subdomains with just one-click! Once enabled, customers will no longer have to worry about insecure connection errors to subdomains not covered by their default TLS certificate because Total TLS will keep all the traffic bound to the subdomains encrypted.
In 2014, we announced Universal SSL — a free TLS certificate for every Cloudflare customer. Universal SSL was built to be a simple “one-size-fits-all” solution. For customers that use Cloudflare as their authoritative DNS provider, this certificate covers the apex and a wildcard e.g. example.com and *.example.com. While a Universal SSL certificate provides sufficient coverage for most, some customers have deeper subdomains like a.b.example.com for which they’d like TLS coverage. For those customers, we built Advanced Certificate Manager — a Continue reading
What's the state of IPv6 in the public cloud? What support is available in which of the major providers? What are the cloud challenges of v6? How does v6 affect multi-cloud architectures? The latest episode of the IPv6 Buzz podcast examines these and other v6 questions for public cloud.
The post IPv6 Buzz 111: IPv6 And The Public Cloud appeared first on Packet Pushers.
Who’s using the cloud? Is cheap complexity harmful? Are mainframes dead? Is this the end of specialized networking hardware? Is it a good idea to have server folks build networks? On this episode of the Hedge, Tom, Eyvonne, and Russ go “guestless” in a roundtable about various topics and ideas in the networking world. Listen here—
Varicose veins are a common condition that occurs when the valves in the veins become damaged and allow blood to flow backwards. This can cause the veins to become enlarged and twisted. Although varicose veins can occur at any age, they are more common in people over the age of 50 and in women who have been pregnant. People who have a sedentary lifestyle are also at increased risk for developing varicose veins. The good news is that there are several things you can do to reduce your risk of developing varicose veins.
Doing regular physical activity helps keep the blood flowing throughout your body. Aim for 30 minutes of aerobic exercise at least five days a week. Walking, jogging and swimming are all good activities to help reduce your risk of developing varicose veins.
Compression stockings are tight-fitting stockings that help reduce the pressure in your veins, which can help prevent varicose veins from developing. Your doctor can recommend the best type of stocking for you.
Lying down and propping your legs up above your heart can help reduce the pressure in Continue reading