Network Break 258: Aruba Stacks Up New Switches; SpaceX Promises Satellite Broadband In 2020
Today's Network Break examines new campus and data center switches from Aruba, looks at new SD-WAN gear from Riverbed, discusses Teridion PoPs in China for SD-WAN, explores financial results from Juniper and AWS, and much more. Guest Ed Horley joins as guest commentator.Microsoft Strikes Down AWS With ‘Big’ JEDI Win
“From the looks of it, the DoD process looked unstructured and was full of fits and starts ......
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The Week in Internet News: U.S. Big Tech Firms Skip Chinese Internet Conference
Not our model: Google, Twitter, Facebook, and Apple skipped a Chinese conference focused on a global governance model for the Internet, Asia One reports. During the conference, China promoted its highly restrictive model of the Internet. Google, Twitter, and Facebook are blocked in China, while Apple must use a local partner to offer cloud services, the story notes.
No news for you: Meanwhile, the Chinese government’s Great Firewall blocks 23 percent of the news organizations that have journalists stationed in the country, reports the South China Morning Post, citing statistics from the Foreign Correspondents’ Club of China. Nearly a third of English-language sites are blocked. Blocked sites include the BBC, The Guardian, The New York Times, The Wall Street Journal, and the Washington Post.
Flying cars and smart mirrors: Among the Internet of Things trends to look for in 2020 are flying cars and mirrors that deliver news and weather while you’re brushing your hair, What Mobile says. Widespread use of flying cars may be a way off, but one startup is working on them. Multilingual voice assistants and flexible displays are other things to watch for.
Opposed to encryption: A large U.S. Internet service provider is lobbying lawmakers in opposition to Continue reading
Supporting the latest version of the Privacy Pass Protocol
At Cloudflare, we are committed to supporting and developing new privacy-preserving technologies that benefit all Internet users. In November 2017, we announced server-side support for the Privacy Pass protocol, a piece of work developed in collaboration with the academic community. Privacy Pass, in a nutshell, allows clients to provide proof of trust without revealing where and when the trust was provided. The aim of the protocol is then to allow anyone to prove they are trusted by a server, without that server being able to track the user via the trust that was assigned.
On a technical level, Privacy Pass clients receive attestation tokens from a server, that can then be redeemed in the future. These tokens are provided when a server deems the client to be trusted; for example, after they have logged into a service or if they prove certain characteristics. The redeemed tokens are cryptographically unlinkable to the attestation originally provided by the server, and so they do not reveal anything about the client.
To use Privacy Pass, clients can install an open-source browser extension available in Chrome & Firefox. There have been over 150,000 individual downloads of Privacy Pass worldwide; approximately 130,000 in Chrome and Continue reading
Whitebox Hardware and Open-Source Software
One of my subscribers was interested in trying out whitebox solutions. He wrote:
What open source/whitebox software/hardware should I look at if I wanted to build a leaf-and-spine VXLAN/EVPN/BGP data center.
I don’t think you can get a fully-open-source solution because the ASIC manufacturers hide their SDK behind a mountain of NDAs (that strategy must make perfect sense – after all, it generated such awesome PR for NVIDIA). Anyway, the closest you can get (AFAIK) if you're a mere mortal is Cumulus Linux, and you just choose any whitebox hardware off their Hardware Compatibility List.
Read more ...Junos – Loading Configs – 1 of 5 – Merge
In this post series, we will cover one of the wonderful things with Junos, which is loading configurations to the …
The post Junos – Loading Configs – 1 of 5 – Merge appeared first on Fryguy's Blog.
OpenBSD in 2019
I’ve used OpenBSD on and off since 2.1. More back then than in the last 10 years or so though, so I thought I’d try it again.
What triggered this was me finding a silly bug in GNU cpio that has existed with a “FIXME” comment since at least 1994. I checked OpenBSD to see if it had a related bug, but as expected no it was just fine.
I don’t quite remember why I stopped using OpenBSD for servers, but I do remember filesystem corruption on “unexpected power disconnections” (even with softdep turned on), which I’ve never really seen on Linux.
That and that fewer things “just worked” than with Linux, which matters more when I installed more random things than I do now. I’ve become a lot more minimalist. Probably due to less spare time. Life is better when you don’t run things like PHP (not that OpenBSD doesn’t support PHP, just an example) or your own email server with various antispam tooling, and other things.
This is all experience from running OpenBSD on a server. On my next laptop I intend to try running OpenBSD on the dektop, and will see if that more ad-hoc environment Continue reading
Tales from the Crypt(o team)
Halloween season is upon us. This week we’re sharing a series of blog posts about work being done at Cloudflare involving cryptography, one of the spookiest technologies around. So bookmark this page and come back every day for tricks, treats, and deep technical content.
A long-term mission
Cryptography is one of the most powerful technological tools we have, and Cloudflare has been at the forefront of using cryptography to help build a better Internet. Of course, we haven’t been alone on this journey. Making meaningful changes to the way the Internet works requires time, effort, experimentation, momentum, and willing partners. Cloudflare has been involved with several multi-year efforts to leverage cryptography to help make the Internet better.
Here are some highlights to expect this week:
- We’re renewing Cloudflare’s commitment to privacy-enhancing technologies by sharing some of the recent work being done on Privacy Pass
- We’re helping forge a path to a quantum-safe Internet by sharing some of the results of the Post-quantum Cryptography experiment
- We’re sharing the rust-based software we use to power time.cloudflare.com
- We’re doing a deep dive into the technical details of Encrypted DNS
- We’re announcing support for a new technique we developed with industry partners Continue reading
Path Prepending in BGP
In this article I'd like to look at one particular aspect of the Internet's inter-domain routing framework, namely the role of the Autonomous System (AS) Path in the operation of BGP, and in particular the use of AS Prepending.TCP MD5
TCP_MD5 (RFC 2385) is something that doesn’t come up often. There’s a couple fo reasons for that, good and bad.
I used it with tlssh, but this should explain why I didn’t enable it by default.
What it is
In short it’s a TCP option that adds an MD5-based signature to every TCP packet. It signs the source and destination IP address, and the ports, and the payload. That way the data is both authenticated and integrity protected.
When an endpoint enables TCP MD5, all unsigned packets (including SYN packets) are silently dropped. For a signed connection it’s not even possible for an eavesdropper to reset the connection, since the RST would need to be signed.
It’s used by the BGP protocol to set a password on the connection, instead of sending the password in the handshake. If the password doesn’t match the TCP connection doesn’t even establish.
But outside of BGP it’s essentially not used, which is a shame. If we could enable it for any TCP service it’d add a preshared key and completely replace the silly port knocking. It probably couldn’t replace user passwords, but it could add a layer and greatly reduce attack surface much Continue reading
Cisco Networking Trends Report: ‘Intent-Based Networking Is Coming’
Winter is coming, and according to Cisco's 2020 Global Networking Trends Report released today, so...
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Worth Reading: Hard Work
Seth Godin published an interesting article on the value of hard work (and what hard work really is). Go and read it first, then we’ll translate it into networking terms.
Already back? Good, let’s go.
The first worker is a traditional networking technician (it wouldn’t be fair to call him an engineer) – he’s busy configuring VLANs, ACLs, firewall rules… the whole day.
Read more ...Heavy Networking 481: Enhancing Cloud Security With Network Detection And Response From ExtraHop (Sponsored)
ExtraHop is our sponsor for today's Heavy Networking podcast. We dive into Network Detection and Response (NDR) with CTO and co-founder Jesse Rothstein. We explore how to enhance your security posture with NDR, how to use it in the cloud, ExtraHop's ability to take advantage of native cloud traffic mirroring, how ExtraHop deals with encrypted traffic, and more.
The post Heavy Networking 481: Enhancing Cloud Security With Network Detection And Response From ExtraHop (Sponsored) appeared first on Packet Pushers.
Slow Service Provider Sales Muddle Juniper’s Q3 Earnings
Growth within the company's enterprise, security and software businesses wasn't enough to offset...
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Cloud Wars: Amazon, Microsoft Report Declining Cloud Growth
Cloud giants Amazon and Microsoft reported declining quarterly cloud growth this week. Still, both...
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Verizon Touts 5G Scenarios Amid ‘Worrisome Signs’
Verizon announced a collaborative effort with SAP to deliver edge computing and real-time analytics...
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The End of SD-WAN’s Party In China
As I was listening to Network Break Episode 257 from my friends at Packet Pushers, I heard Greg and Drew talking about a new development in China that could be the end of SD-WAN’s big influence there.
China has a new policy in place, according to Axios, that enforces a stricter cybersecurity stance for companies. Companies doing business in China or with offices in China must now allow Chinese officials to get into their networks to check for security issues as well as verifying the supply chain for network security.
In essence, this is saying that Chinese officials can have access to your networks at any time to check for security threats. But the subtext is a little less clear. Do they get to control the CPE as well? What about security constructs like VPNs? This article seems to indicate that as of January 1, 2020, there will be no intra-company VPNs authorized by any companies in China, whether Chinese or foreign businesses in China.
Tunnel Collapse
I talked with a company doing some SD-WAN rollouts globally in China all the way back in 2018. One of the things that was brought up in that interview was that Continue reading
So, what exactly is NFA?
The post So, what exactly is NFA? appeared first on Noction.