We at Packet Pushers Interactive were saddened to learn of the death of Kurt Marko on January 12th, 2022. Kurt wrote numerous columns for this Web site and our Ignition site, as well as for other publications such as Diginomica. We respected his insights, analysis, and informed perspective. Kurt’s writing and analysis were informed by […]
The post In Memoriam: Kurt Marko appeared first on Packet Pushers.
I’ve kicked off a series over at Packet Pushers on the ; the first installment is up now.
There’s a chapter in my new book on the topic, as well.
Cato Networks is announcing the availability of a Cloud Access Security Broker (CASB) capability that will be integrated into Cato’s cloud-based security service, which already includes next-gen firewalls, anti-malware, and more. The CASB provides visibility into, and control over, SaaS, cloud, and on-premises applications. Visibility is a key feature of the CASB service. SaaS and […]
The post Cato Networks Adds A Cloud Access Security Broker (CASB) For App Visibility And Control appeared first on Packet Pushers.
Web3 is the term for an emerging technology movement that aims to create a more decentralized Internet and put more ownership in the hands of individual users and consumers. At present Web3 is associated with cryptocurrencies and NFTs, but it's worth understanding the technological underpinnings of Web3, particularly blockchain and its broader applications. Our guide to Web3 infrastructure is Josh Neuroth.
The post Day Two Cloud 132: What Web3 Means For Infrastructure Engineers appeared first on Packet Pushers.
One of the most innovative features of Netvisor 7 is a new suite of monitoring and visibility tools, including FlowTracker and KubeTracker™ fabric services.
The post Pluribus Netvisor ONE R7 Feature Spotlight: Kubernetes-aware Fabric with the KubeTracker™ Fabric Service appeared first on Pluribus Networks.
Today, Pluribus released Netvisor 7, which marks another major step forward in our mission to radically simplify deployment and operations for distributed cloud networking. One of the most innovative features of this release is a new suite of monitoring and visibility tools, including FlowTracker and KubeTracker fabric services.
In prior releases, Netvisor ONE OS and the Adaptive Cloud Fabric software could capture flow telemetry for TCP flows only. With the introduction of FlowTracker in R7, Pluribus now provides telemetry on every flow traversing the fabric, including TCP, UDP, ICMP and even infrastructure services flows like DCHP, DNS and more.
Amazingly, this comprehensive flow telemetry is achieved without the need for an expensive external TAP and TAP aggregation overlay infrastructure. The cost of procuring and deploying TAPS to capture packet flows for analysis can be daunting and often results in cost/benefit tradeoffs where TAPS are only installed at certain points in the network. With FlowTracker, that expense and those tradeoffs are eliminated, every flow in the fabric is captured, and flow metadata is exported to tools like our UNUM Insight Analytics platform.
The KubeTracker fabric service is a powerful new capability delivered by the Adaptive Cloud Fabric specifically for network operators Continue reading
Often programmers have assumptions that turn out, to their surprise, to be invalid. From my experience this happens a lot. Every API, technology or system can be abused beyond its limits and break in a miserable way.
It's particularly interesting when basic things used everywhere fail. Recently we've reached such a breaking point in a ubiquitous part of Linux networking: establishing a network connection using the connect()
system call.
Since we are not doing anything special, just establishing TCP and UDP connections, how could anything go wrong? Here's one example: we noticed alerts from a misbehaving server, logged in to check it out and saw:
marek@:~# ssh 127.0.0.1
ssh: connect to host 127.0.0.1 port 22: Cannot assign requested address
You can imagine the face of my colleague who saw that. SSH to localhost refuses to work, while she was already using SSH to connect to that server! On another occasion:
marek@:~# dig cloudflare.com @1.1.1.1
dig: isc_socket_bind: address in use
This time a basic DNS query failed with a weird networking error. Failing DNS is a bad sign!
In both cases the problem was Linux running out of ephemeral ports. When Continue reading
Every time I’m writing netsim-tools release notes I’m amazed at the number of features we managed to put together in just a few weeks.
Here are the goodies from netsim-tools releases 1.1.1 and 1.1.2:
Every time I’m writing netsim-tools release notes I’m amazed at the number of features we managed to put together in just a few weeks.
Here are the goodies from netsim-tools releases 1.1.1 and 1.1.2:
Today we are launching Cloudflare’s paid public bug bounty program. We believe bug bounties are a vital part of every security team’s toolbox and have been working hard on improving and expanding our private bug bounty program over the last few years. The first iteration of our bug bounty was a pure vulnerability disclosure program without cash bounties. In 2018, we added a private bounty program and are now taking the next step to a public program.
Starting today, anyone can report vulnerabilities related to any Cloudflare product to our public bug bounty program, hosted on HackerOne’s platform.
Let's walk through our journey so far.
In 2014, when the company had fewer than 100 employees, we created a responsible disclosure policy to provide a safe place for security researchers to submit potential vulnerabilities to our security team, with some established rules of engagement. A vulnerability disclosure policy is an important first step for a company to take because it is an invitation to researchers to look at company assets without fear of repercussions, provided the researchers follow certain guidelines intended to protect everyone involved. We still stand by that policy and welcome Continue reading
In the first post on a series on privacy and networking, Russ White makes the case that privacy matters not just for infosec, risk management, or compliance, but as a human right.
The post Privacy And Networking: Part 1 – Why Privacy? appeared first on Packet Pushers.
Nprobe includes both a NetFlow v5/v9/IPFIX probe and collector. In a probe mode, nProbe captures […]
The post Nprobe Layer 7 Application Visibility and Optional Plugins first appeared on Brezular's Blog.