Christos Paloukas

🚀 𝗡𝗲𝘁𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝗲𝘅𝗽𝗹𝗮𝗶𝗻𝗲𝗱 𝘁𝗵𝗲 𝗳𝘂𝗻 𝘄𝗮𝘆 Sometimes, the best way to understand complex concepts is through a little humor: 🔐 VPN – A secure tunnel, like sharing the same straw for privacy. 🛡️ SSH – A protected channel, keeping your communication safe. 📦 TCP – Careful delivery, making sure every drop of data reaches you. 💦 UDP – Fast and efficient… but not always reliable. This is why network engineers always ask: 👉 Do you want reliability or speed? Both protocols have their place—just depends on what problem you’re solving. 🔔 Follow Tech Talks for expert tips and updates on top tech courses like Cybersecurity, BigData, DevOps, AI, ML, Development, Testing, Marketing & more! #Networking #CyberSecurity #TCP #UDP #VPN #SSH #TechHumor

2.365

34 σχόλια

Could you explain #Kubernetes without relying on technical terms? 🤯 That’s exactly what our colleague Mihai Scornea did in this latest #RSystemsVoices article. If you’re curious about his approach or want to understand Kubernetes without dealing with the complicated terminology, this one’s for you 👇 https://bit.ly/4oBUfrS #RSystemsInsights #KubernetesSimplified #CloudComputing #DevOps #CloudNative #Containers #TechExplained

82

1 σχόλιο

When your Linux infrastructure breaks, who do you call? 🚨 Security maintenance keeps you safe. Linux support gets you back up and running fast. These two concepts reinforce each other to keep your infrastructure resilient. At Canonical, our support team isn't just a help desk, we’re the engineers who build and maintain the software you’re running. Real support cases we’ve handled: • Scaling FIPS-compliant Landscape for thousands of VMs • Resolving Ceph cluster latency in days, not weeks • Preventing fleet-wide outages with rapid remote response From kernel to Kubernetes, Ceph to OpenStack, when you encounter critical issues, you need more than documentation. You need deep technical expertise that spans every layer of the stack. Discover what Linux support really means: https://lnkd.in/djCGkmEC #OpenSource #Canonical #LinuxSupport

94

2 σχόλια

Lukas Maar discovered two timing side-channel attacks that give away hidden map in the Linux Kernel. One attack uses timing in kernel tables, the other leaks clues from the TLB. Together, they let even normal users find hidden kernel objects — a big step toward larger attacks. Know More: https://lnkd.in/df_BYPz2 #NullconBerlin2025 #TLB #kernel #sidechannel

41

It’s easy for #Kubernetes security to drift over time. Permissions expand, old configurations stay in place, and container images are deployed without proper scanning. In this guide, you’ll discover how to identify and close these gaps so your environment is better protected. Explore now >> https://bit.ly/45HgxQk

30

We maxed out n8n. Here's when it broke. 💥 In this video, we stress tested n8n on two AWS instance types: C5.large and C5.4xlarge, using both Single mode and Queue mode architectures. We ran three critical benchmarking scenarios: → Single Webhook: one flow triggered repeatedly → Multi Webhook: 10 workflows triggered in parallel → Binary Data: large file uploads and processing Key takeaways: Queue mode consistently outperforms Single mode Bigger AWS instances (C5.4xlarge) deliver 2–10x better performance Binary data workflows push n8n to its limits Watch it here and let us know what you think! ▶️ https://buff.ly/g7xJUQA Whether you're a solo developer or running an enterprise automation platform, this benchmark shows exactly how far n8n can go. Want to test your own setup? Find our n8n Benchmarking Guide, here: https://buff.ly/Sb6BLfp Thanks Angel Menendez for the great video! 👏🏻 #n8n #loadtesting #DevOps #cloudengineering #automation #benchmarking #AWS

247

18 σχόλια

🔒 📌 Jaroslav Lobačevski (GitHub) talks about Securing Your GitHub Actions at #OpenSSFCommunity Day Europe. He shows common vulnerability patterns seen in the wild and shares best practices and tools to keep your CI/CD supply chain safe. #OpenSSFCommunity #OSSummit

22

🎂 𝗡𝗲𝘁𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝗶𝘀 𝗮 𝗽𝗶𝗲𝗰𝗲 𝗼𝗳 𝗰𝗮𝗸𝗲... 𝗶𝗳 𝘆𝗼𝘂 𝘀𝗹𝗶𝗰𝗲 𝗶𝘁 𝗿𝗶𝗴𝗵𝘁! Ever wondered how devices talk to each other seamlessly across the internet? The OSI (Open Systems Interconnection) model breaks it down into 7 delicious layers—just like this cake. 🍰 🔹 Application Layer – where apps meet the network 🔹 Presentation Layer – data representation, encryption, decryption 🔹 Session Layer – interhost communication 🔹 Transport Layer – end-to-end connection, reliability & flow control 🔹 Network Layer – routing & logical addressing 🔹 Data-Link Layer – physical addressing 🔹 Physical Layer – signals & binary transmission Understanding OSI helps us troubleshoot better, design smarter, and appreciate the “recipe” behind smooth communication systems. 👉 If you’re in networking, cybersecurity, or IT, knowing these layers isn’t optional—it’s foundational. How would you describe your work in terms of the OSI “cake”? 🍰 🔔 Follow Cyber Press ® for more cybersecurity tips! #Networking #CyberSecurity #OSIModel #TechLearning #CareerInTech

99

5 σχόλια

Open source is in Sysdig’s DNA. 🧬 From Falco, to Wireshark Foundation, to #Stratoshark, we'e seen the power of community-driven innovation. That’s why we launched the 𝗦𝘆𝘀𝗱𝗶𝗴 𝗢𝗽𝗲𝗻 𝗦𝗼𝘂𝗿𝗰𝗲 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝘁𝘆 — a place for practitioners and enthusiasts to connect, learn, and collaborate. 🤝 Whether you’re contributing ideas, diving into OSS best practices, or just starting your open source journey, we built this space for 𝗬𝗢𝗨. 🌐 Explore the community ➔ https://okt.to/EJP2fA

21

2 σχόλια