Masergy Debuts AIOps, Your Virtual Network Assistant
The company said AIOps has the potential to significantly reduce downtime, enable faster fault...
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Is Pentagon JEDI Program a $10B Cloud Security Fiasco?
If the Pentagon suffers a security breach, there’s a lot more to worry about than cost. That’s...
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Google Fortifies Kubernetes Nodes Against Boot Attacks
The Google angle hardens the underlying Google Kubernetes Engine node against rootkits and...
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Money Moves: August 2019
Here are some of the most prominent venture capital and merger and acquisition news items from...
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Prevent DNS (and other) spoofing with Calico
AquaSec’s Daniel Sagi recently authored a blog post about DNS spoofing in Kubernetes. TLDR is that if you use default networking in Kubernetes you might be vulnerable to ARP spoofing which can allow pods to spoof (impersonate) the IP addresses of other pods. Since so much traffic is dialed via domain names rather than IPs, spoofing DNS can allow you to redirect lots of traffic inside the cluster for nefarious purposes.
So this is bad, right? Fortunately, Calico already prevents ARP spoofing out of the box. Furthermore, Calico’s design prevents other classes of spoofing attacks. In this post we’ll discuss how Calico keeps you safe from IP address spoofing, and how to go above and beyond for extra security.
ARP Spoofing
ARP spoofing is an attack that allows a malicious pod or network endpoint to receive IP traffic that isn’t meant for it. Sagi’s post already describes this well, so I won’t repeat the details here. An important thing to note, however, is that ARP spoofing only works if the malicious entity and the target share the same layer 2 segment (e.g. have direct Ethernet connectivity). In Calico, the network is fully routed at layer 3, meaning that Continue reading
An MNO’s Guide to Buying a 5G-Ready Next-Generation Firewall
In the new era of 5G, mobile network operators have the opportunity to move up the value chain and...
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Cloudflare IPO Targets a $483M Haul, $3.5B Valuation
The vendor claims it competes against companies like Amazon, Cisco, and Oracle. It also directly...
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Thread on the OSI model is a lie
I had a Twitter thread on the OSI model. Below it's compiled into one blogpost
Yea, I've got 3 hours to kill here in this airport lounge waiting for the next leg of my flight, so let's discuss the "OSI Model". There's no such thing. What they taught you is a lie, and they knew it was a lie, and they didn't care, because they are jerks.
You know what REALLY happened when the kid pointed out the king was wearing no clothes? The kid was punished. Nobody cared. And the king went on wearing the same thing, which everyone agreed was made from the finest of cloth.
The OSI Model was created by international standards organization for an alternative internet that was too complicated to ever work, and which never worked, and which never came to pass.
Sure, when they created the OSI Model, the Internet layered model already existed, so they made sure to include today's Internet as part of their model. But the focus and intent of the OSI's efforts was on dumb networking concepts that worked differently from the Internet.
OSI wanted a "connection-oriented network layer", one that worked like the telephone system, where every switch Continue reading
Thread on network input parsers
This blogpost contains a long Twitter thread on input parsers. I thought I'd copy the thread here as a blogpost.
I am spending far too long on this chapter on "parsers". It's this huge gaping hole in Computer Science where academics don't realize it's a thing. It's like physics missing one of Newton's laws, or medicine ignoring broken bones, or chemistry ignoring fluorine.
"Langsec" has the best model, but at the same time, it's a bit abstract ("input is a language that drives computation"), so I want to ease into it with practical examples for programmers.
Among the needed steps is to stamp out everything you were taught in C/C++ about pointer-arithmetic and overlaying internal packed structures onto external data. Big-endian vs. little-endian isn't confusing -- it's only made confusing because you were taught it wrongly.
Hmmm. I already see a problem with these tweets. People assume I mean "parsing programming languages", like in the Dragon book. Instead, I mean parsing all input, such as IP headers, PDF files, X.509 certificates, and so Continue reading
Cisco Patches Critical Bug in REST API Container
Cisco issued a patch for a critical bug in its IOS XE operating system that could allow a remote...
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Announcing the General Availability of API Tokens
APIs at Cloudflare
Today we are announcing the general availability of API Tokens - a scalable and more secure way to interact with the Cloudflare API. As part of making a better internet, Cloudflare strives to simplify manageability of a customer’s presence at the edge. Part of the way we do this is by ensuring that all of our products and services are configurable by API. Customers ranging from partners to enterprises to developers want to automate management of Cloudflare. Sometimes that is done via our API directly, and other times it is done via open source software we help maintain like our Terraform provider or Cloudflare-Go library. It is critical that customers who are automating management of Cloudflare can keep their Cloudflare services as secure as possible.
Least Privilege and Why it Matters
Securing software systems is hard. Limiting what a piece of software can do is a good defense to prevent mistakes or malicious actions from having greater impact than they could. The principle of least privilege helps guide how much access a given system should have to perform actions. Originally formulated by Jerome Saltzer, “Every program and every privileged user of the system should operate using Continue reading
IBM, Orange Top UK’s SDN Market, Says ISG Report
IBM and Orange Business Services top the list of U.K. SDN vendors, according to an ISG report that...
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OnX Adds Cisco SD-WAN to Its Managed Service Portfolio
Toronto-based cloud services provider OnX Canada is now offering Cisco's SD-WAN as a managed...
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How Will Open Source Deal With Success?
“Part of winning is that with great power comes great responsibility,” noted Red Hat CTO Chris...
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Check Point Expands CloudGuard to SD-WAN Security
Check Point expanded its CloudGuard portfolio with the launch of two new security suites aimed at...
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VMware Adds Load Balancer, Analytics Engine to NSX
VMware rolled out updates to its NSX networking platform including a new analytics engine and load...
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Rackspace Targets Hybrid-Cloud Adoption With New Services
Rackspace rolled out five new enhancements to its hybrid cloud portfolio aimed at helping customers...
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Mellanox Reveals SmartNICs With 200 Gb/s Connectivity
Mellanox today introduced a pair of SmartNICs for data center servers and storage systems at...
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IBM Drives Quantum-Safe Cryptography Into Its Public Cloud
IBM predicts that due to the rate of progress in quantum computing data protected by current...
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