HN712: FortiGuard Security Services: Invisible Operations, Tangible Results (Sponsored)
Today we’re talking security, but security you don’t always see. Fortinet, today’s sponsor, has millions of devices in the field. These are real-world devices seeing real-world traffic, all day, everyday. While those devices have a primary protection role, they can also serve as sensors that collect threat signals and feed threat intelligence services that can,... Read more »Overspending on SaaS? 6 Ways to Cost Optimization
Here are 6-step quick tips to optimize your SaaS spending. Applying these tactics in your organization can reduce your SaaS expenses without adversely impacting your bottom line.HS060 Power Micro-Generation for Data Center
Powering data centres is big deal in current decade. Massive increases in consumption and scaling of off-prem clouds has exceeded the capacity of civilian power grids while cloud operators are reluctant to sign thirty year supply agreements so that more power plants can be built. Enter power micro-generation where large DCs needs too small power supply.
The post HS060 Power Micro-Generation for Data Center appeared first on Packet Pushers.
HS060: Power Micro-Generation for Data Center
Powering data centres is big deal in current decade. Massive increases in consumption and scaling of off-prem clouds has exceeded the capacity of civilian power grids while cloud operators are reluctant to sign thirty year supply agreements so that more power plants can be built. Enter power micro-generation where too large DCs needs too small... Read more »
Latest copyright decision in Germany rejects blocking through global DNS resolvers
This post is also available in Deutsch.
A recent decision from the Higher Regional Court of Cologne in Germany marked important progress for Cloudflare and the Internet in pushing back against misguided attempts to address online copyright infringement through the DNS system. In early November, the Court in Universal v. Cloudflare issued its decision rejecting a request to require public DNS resolvers like Cloudflare’s 1.1.1.1. to block websites based on allegations of online copyright infringement. That’s a position we’ve long advocated, because blocking through public resolvers is ineffective and disproportionate, and it does not allow for much-needed transparency as to what is blocked and why.
What is a DNS resolver?
To see why the Universal decision matters, it’s important to understand what a public DNS resolver is, and why it’s not a good place to try to moderate content on the Internet.
The DNS system translates website names to IP addresses, so that Internet requests can be routed to the correct location. At a high-level, the DNS system consists of two parts. On one side sit a series of nameservers (Root, TLD, and Authoritative) that together store information mapping domain names to IP addresses; on the other Continue reading
netlab 1.7.0: Lab Validation, Fabrics, BGP Nerd Knobs
It’s been a while since the last netlab release. Most of that time was spent refactoring stuff that you don’t care about, but you might like these features:
- You can run automated lab validation tests with the netlab validate command. I will explain how I use that in BGP labs in a few days.
- If you want to build large leaf-and-spine topologies, you’ll love the fabric plugin.
- The bgp.domain plugin allows you to create topologies with multiple sites using the same BGP AS number.
- The bgp.policy plugin got AS-path prepending.
- bgp.originate plugin can be used to originate BGP IPv4 and IPv6 prefixes.
As always, we also improved the platform support:
netlab 1.7.0: Lab Validation, Fabrics, BGP Nerd Knobs
It’s been a while since the last netlab release. Most of that time was spent refactoring stuff that you don’t care about, but you might like these features:
- You can run automated lab validation tests with the netlab validate command. I will explain how I use that in BGP labs in a few days.
- If you want to build large leaf-and-spine topologies, you’ll love the fabric plugin.
- The bgp.domain plugin allows you to create topologies with multiple sites using the same BGP AS number.
- The bgp.policy plugin got AS-path prepending.
- bgp.originate plugin can be used to originate BGP IPv4 and IPv6 prefixes.
As always, we also improved the platform support:
The Key to a Simplified Network Automation System
Simplified network automation can help organizations more effectively manage resources, offer data insights to better understand a network and workflows, and transform the planning, deployment, and operations of a network.Tech Bytes: Pliant Combines APIs, Low Code Approach For Network Automation (Sponsored)
Today on the Tech Bytes podcast we talk with sponsor Pliant about its automation platform. Pliant helps you orchestrate across devices and domains with a low-code approach that uses APIs to automate and orchestrate across your infrastructure.
The post Tech Bytes: Pliant Combines APIs, Low Code Approach For Network Automation (Sponsored) appeared first on Packet Pushers.
Tech Bytes: Pliant Combines APIs, Low Code Approach For Network Automation (Sponsored)
Network automation takes a variety of forms, from individual scripts that handle specific tasks, to workflows that have to be orchestrated across multiple devices and systems. Today on the Tech Bytes podcast we talk with sponsor Pliant about its automation platform. Pliant helps you orchestrate across devices and domains with a low-code approach that uses... Read more »NB458: Broadcom Debuts On-Chip Neural Net, Lays Off VMware Staff; Okta Breach Gets Worse
Today's Network Break discusses a new Trident ASIC with an on-chip neural net inference engine, Broadcom staff cuts at VMware, more bad news from an Okta breach, financial results, and more.
The post NB458: Broadcom Debuts On-Chip Neural Net, Lays Off VMware Staff; Okta Breach Gets Worse appeared first on Packet Pushers.
NB458: Broadcom Debuts On-Chip Neural Net, Lays Off VMware Staff; Okta Breach Gets Worse
Broadcom’s latest Trident ASIC will include a neural net inference engine on the chip that can analyze traffic and take action in the packet pipeline, but it’s up to customers to build rules and signatures based on their own training data. Broadcom has also announced it will lay off approximately 1,300 VMware employees. Identity provider... Read more »Routing Through the Forest of Trees
Some friends shared a Reddit post the other day that made me both shake my head and ponder the state of the networking industry. Here is the locked post for your viewing pleasure. It was locked because the comments were going to devolve into a mess eventually. The person making the comment seems to be honest and sincere in their approach to “layer 3 going away”. The post generated a lot of amusement from the networking side of IT about how this person doesn’t understand the basics but I think there’s a deeper issue going on.
Trails To Nowhere
Our visibility of the state of the network below the application interface is very general in today’s world. That’s because things “just work” to borrow an overused phrase. Aside from the occasional troubleshooting exercise to find out why packets destined for Azure or AWS are failing along the way when is the last time you had to get really creative in finding a routing issue in someone else’s equipment? We spend more time now trying to figure out how to make our own networks operate efficiently and less time worrying about what happens to the packets when they leave our organization. Continue reading
Upcoming Pearson Class: Modern Network Troubleshooting
On the 26th of January, I’ll be teaching a webinar over at Safari Books Online (subscription service) called Modern Network Troubleshooting. From the blurb:
The first section of this class considers the nature of resilience, and how design tradeoffs result in different levels of resilience. The class then moves into a theoretical understanding of failures, how network resilience is measured, and how the Mean Time to Repair (MTTR) relates to human and machine-driven factors. One of these factors is the unintended consequences arising from abstractions, covered in the next section of the class.
The class then moves into troubleshooting proper, examining the half-split formal troubleshooting method and how it can be combined with more intuitive methods. This section also examines how network models can be used to guide the troubleshooting process. The class then covers two examples of troubleshooting reachability problems in a small network, and considers using ChaptGPT and other LLMs in the troubleshooting process. A third, more complex example is then covered in a data center fabric.
The BGP Origin Attribute
Kristijan Taskovski asked an interesting question related to my BGP AS-prepending lab:
I’ve never personally done this on the net but….wouldn’t the BGP origin code also work with moving one’s ingress traffic similarly to AS PATH?
TL&DR: Sort of, but not exactly. Also, just because you can climb up ropes using shoelaces instead of jumars doesn’t mean you should.
Let’s deal with the moving traffic bit first.
The BGP Origin Attribute
Kristijan Taskovski asked an interesting question related to my BGP AS-prepending lab:
I’ve never personally done this on the net but….wouldn’t the BGP origin code also work with moving one’s ingress traffic similarly to AS PATH?
TL&DR: Sort of, but not exactly. Also, just because you can climb up ropes using shoelaces instead of jumars doesn’t mean you should.
Let’s deal with the moving traffic bit first.
Cisco Dynamic Trunk Protocol Hacking with Scapy
A port on a Cisco switch is either an access port or a trunk port. […]
The post Cisco Dynamic Trunk Protocol Hacking with Scapy first appeared on Brezular's Blog.
Worth Reading: DNS over IPv6
What happens when you let a bunch of people work on different aspects of a solution without them ever talking to each other? You get DNS over IPv6. As nicely explained by Geoff Huston, this is just one of the bad things that could happen:
Worth Reading: DNS over IPv6
What happens when you let a bunch of people work on different aspects of a solution without them ever talking to each other? You get DNS over IPv6. As nicely explained by Geoff Huston, this is just one of the bad things that could happen:
Rust Binary Release with Gitlab CI
https://codingpackets.com/blog/rust-binary-release-with-gitlab-ci