Are Network Operations Teams the Unsung Heroes of Security?
With IT teams overworked and understaffed, enterprises must embrace automation to ensure efficient and secure network operations.Protected: NSX Multi-Tenancy Journey
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Build Your K8s Environment For The Real World Part 1 – Day Zero Ops
When you’re designing a Kubernetes environment, whether it’s small or large, there are a few things that you must think about prior to writing the code to deploy the cluster or implementing the GitOps Controller for all of your Continuous Delivery needs. First, you must plan. Planning is the most important phase. In blog one […]
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Heavy Strategy 43 Is The IT Team In The Service, Project or Product Business
Differences between project (disruption, replacement), service (smooth, continuous) and product (updates, changes) mean that process and people have very different approach to technology management and operations.
The post Heavy Strategy 43 Is The IT Team In The Service, Project or Product Business appeared first on Packet Pushers.
HS043 Is The IT Team In The Service, Project or Product Business
Differences between project (disruption, replacement), service (smooth, continuous) and product (updates, changes) mean that process and people have very different approach to technology management and operations.
Modernizing the WAN from Client to Cloud
The evolution of WAN architectures has historically paralleled that of application architectures. When we primarily connected terminals to mainframes, the WAN architecture was largely point-to-point links connecting back to data center facilities. As traffic converged to remove OpEx-intensive parallel network structures, the WAN evolved to architectures that enabled site-to-site connectivity in a full mesh or configurable mesh and then enabled multi-tenancy for carrier cost optimization.
External Links on Spine Switches
A networking engineer attending the Building Next-Generation Data Center online course asked this question:
What is the best practice to connect DC fabric to outside world assuming there are 2 spine switches in the fabric and EVPN VXLAN is used as overlay? Is it a good idea to introduce edge (border) switches, or it is better to connect outside world directly to the spine?
As always, the answer is “it depends,” this time based on:
The Networking RFCs: To read or not to read?
I see this question rather often asked on various social media. A post on Twitter a few days ago triggered this little blog post and I deeply appreciate the poster. The question was simple “Is it really necessary for an engineer to know or understand the key RFC numbers?”. Some of the engineers I work […]
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Demo Bytes: Upgrading Network Devices With BackBox – Video
The BackBox network automation platform comes with many pre-built functions to make routine tasks performed by network administrators simple & foolproof. In this demo, BackBox’s Senior Product Manager Perry Greenwood shows Packet Pushers’ Ethan Banks how to automate network device upgrades using BackBox. We look at the entire lifecycle of the upgrade process, including scheduling, […]
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Assume Disaster
One of the things that people have mentioned to me in the past regarding my event management skills is my reaction time. They say, “You are always on top of things when they go wrong. How do you do it?”
My response never fails to make them laugh. I offer, “I always assume something is going to go wrong. I may not know what it is but when it does happen I’m ready to fix it.”
That may sound like a cynical take on planning and operations but it’s served me well for many years. Why is it that things we spend so much time working on always seem to go off the rails?
Complexity Fails
Whether it’s an event or a network or even a carpentry project you have to assume that something is going to go wrong. Why? Because the more complex the project the more likely you are to hit a snag. Systems that build on themselves and require input to proceed are notorious for hitting blocks that cause the whole thing to snarl into a mess of missed timelines.
When I was in college studying project management I learned there’s even a term for Continue reading
Network Break 422: Microsoft Tasks Copilot To Do Your Drudge Work; Cisco Debuts A New Learning Platform
On this week's Network Break podcast we examine Palo Alto Networks adding AI Ops to its SASE offering, and Microsoft Copilot bringing AI into its suite of Office tools. The Ethernet Adapter market grew 22% in 2022, but not because more NICs were sold; we discuss the real reasons and cover more tech news.
The post Network Break 422: Microsoft Tasks Copilot To Do Your Drudge Work; Cisco Debuts A New Learning Platform appeared first on Packet Pushers.
Network Break 422: Microsoft Tasks Copilot To Do Your Drudge Work; Cisco Debuts A New Learning Platform
On this week's Network Break podcast we examine Palo Alto Networks adding AI Ops to its SASE offering, and Microsoft Copilot bringing AI into its suite of Office tools. The Ethernet Adapter market grew 22% in 2022, but not because more NICs were sold; we discuss the real reasons and cover more tech news.The quantum state of a TCP port
Have you noticed how simple questions sometimes lead to complex answers? Today we will tackle one such question. Category: our favorite - Linux networking.
When can two TCP sockets share a local address?
If I navigate to https://blog.cloudflare.com/, my browser will connect to a remote TCP address, might be 104.16.132.229:443 in this case, from the local IP address assigned to my Linux machine, and a randomly chosen local TCP port, say 192.0.2.42:54321. What happens if I then decide to head to a different site? Is it possible to establish another TCP connection from the same local IP address and port?
To find the answer let's do a bit of learning by discovering. We have prepared eight quiz questions. Each will let you discover one aspect of the rules that govern local address sharing between TCP sockets under Linux. Fair warning, it might get a bit mind-boggling.
Questions are split into two groups by test scenario:
In the first test scenario, two sockets connect from the same local port to the same remote IP and port. However, the local IP is different for each socket.
While, in the second scenario, the local Continue reading
Everything you might have missed during Security Week 2023
Security Week 2023 is officially in the books. In our welcome post last Saturday, I talked about Cloudflare’s years-long evolution from protecting websites, to protecting applications, to protecting people. Our goal this week was to help our customers solve a broader range of problems, reduce external points of vulnerability, and make their jobs easier.
We announced 34 new tools and integrations that will do just that. Combined, these announcement will help you do five key things faster and easier:
- Making it easier to deploy and manage Zero Trust everywhere
- Reducing the number of third parties customers must use
- Leverage machine learning to let humans focus on critical thinking
- Opening up more proprietary Cloudflare threat intelligence to our customers
- Making it harder for humans to make mistakes
And to help you respond to the most current attacks in real time, we reported on how we’re seeing scammers use the Silicon Valley Bank news to phish new victims, and what you can do to protect yourself.
In case you missed any of the announcements, take a look at the summary and navigation guide below.