Microsoft April 2026 .NET and .NET Framework Servicing Updates

#AzureDevOps #Automation #PodSecurity #DevSecOps 🚀 𝐅𝐮𝐥𝐥 𝐏𝐨𝐝 𝐰𝐢𝐭𝐡 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐂𝐨𝐧𝐭𝐞𝐱𝐭 apiVersion: v1 kind: Pod metadata:  name: secure-pod  labels:   app: secure-app spec:  # 🔹 Pod-level security context  securityContext:   runAsUser: 1000    # Default user for all containers   runAsGroup: 3000    # Group ID   fsGroup: 2000     # Volume permissions  containers:  - name: app-container   image: nginx:1.25-alpine   ports:    - containerPort: 80   # 🔹 Container-level security context (overrides pod if needed)   securityContext:    runAsNonRoot: true        # Ensure not root    allowPrivilegeEscalation: false  # Block privilege escalation    privileged: false         # No host-level access    readOnlyRootFilesystem: true   # Root FS read-only    capabilities:     drop:      - ALL             # Drop all Linux capabilities   # 🔹 Volume mount (for writable path if needed)   volumeMounts:    - name: tmp-volume     mountPath: /tmp  # 🔹 Volume (since root FS is read-only)  volumes:   - name: tmp-volume    emptyDir: {} 𝐄𝐱𝐩𝐥𝐚𝐢𝐧𝐞////// 🧠 𝐇𝐨𝐰 𝐈𝐭 𝐖𝐨𝐫𝐤𝐬 (𝐈𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐭) 🔹 Pod Level 𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲𝐂𝐨𝐧𝐭𝐞𝐱𝐭: runAsUser: 1000 fsGroup: 2000 ✔️ Applies to all containers ✔️ Good for common settings 🔹 Container Level 𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲𝐂𝐨𝐧𝐭𝐞𝐱𝐭: runAsNonRoot: true ✔️ More strict controls ✔️ Overrides pod-level if conflict

Nobody teaches you networking when you start DevOps. You just figure it out the hard way. Here's everything you need to know — explained simply: 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗕𝗮𝘀𝗶𝗰𝘀 The foundation that connects everything. LAN → MAN → WAN → The Internet 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗖𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁𝘀 The hardware that makes it all work. Switch → Router → Modem → NIC 𝗜𝗣 𝗔𝗱𝗱𝗿𝗲𝘀𝘀𝗶𝗻𝗴 Every device has an identity on a network. IPv4 → IPv6 → Public/Private → Static/Dynamic 𝗢𝗦𝗜 𝗠𝗼𝗱𝗲𝗹 (7 Layers) How data travels from one device to another. Physical → Data Link → Network → Transport → Session → Presentation → Application 𝗧𝗖𝗣/𝗜𝗣 𝗠𝗼𝗱𝗲𝗹 The model that actually runs the internet. Network Access → Internet → Transport → Application 𝗣𝗿𝗼𝘁𝗼𝗰𝗼𝗹𝘀 & 𝗣𝗼𝗿𝘁𝘀 The language devices use to communicate. HTTP (80) → HTTPS (443) → SSH (22) → FTP (20/21) → DNS (53) 𝗗𝗡𝗦 The phonebook of the internet. Domain → Query → Resolve → Connect 𝗦𝘂𝗯𝗻𝗲𝘁𝘁𝗶𝗻𝗴 & 𝗖𝗜𝗗𝗥 Divide networks efficiently, allocate IPs smartly. /24 = 256 IPs → /25 = 128 IPs → /32 = 1 IP 𝗧𝗿𝗼𝘂𝗯𝗹𝗲𝘀𝗵𝗼𝗼𝘁𝗶𝗻𝗴 𝗧𝗼𝗼𝗹𝘀 What you'll actually use on the job daily. ping → traceroute → dig → netstat → nmap → ssh → curl Networking isn't just for network engineers anymore. If you're in DevOps, Cloud, or SRE — this is your foundation. 🔧 Tag someone who needs this 👇 #DevOps #Networking #CloudComputing #SRE #Linux #TCP #DNS #DevOpsEngineer #TechCommunity #CareerInTech #Infrastructure #LearningEveryDay

🔐 Securing Apache Access with iptables in a Multi-Tier Architecture | KodeKloud Engineer Task Completed a practical task on KodeKloud Engineer focused on securing application servers using iptables in a multi-tier architecture (Nautilus Project). 🔐 Task Objective: Apache (port 8083) was open to all hosts, which posed a security risk. The goal was to restrict access so that only the Load Balancer could communicate with the application servers. 💡 What I Implemented: ✔ Installed iptables and required dependencies on all application servers ✔ Configured firewall rules to allow access to port 8083 only from the Load Balancer ✔ Blocked all other incoming traffic on that port ✔ Ensured rules persist after reboot using systemctl and iptables-save ✔ Verified connectivity using curl from different servers 🛠 Tools & Concepts Used: iptables (Linux firewall) systemctl (service management) Networking & access control Multi-server environment handling 📊 Result: ✅ Load Balancer → Access allowed ❌ Other servers → Access denied 🔁 Rules persisted after reboot 💡 Key Learning: This task strengthened my understanding of Linux firewall configuration, traffic filtering, and securing services in a real-world DevOps setup. #DevOps #KodeKloud #Linux #Networking #CyberSecurity #Cloud #iptables #HandsOnLearning #LearningInPublic

🔍 Packet Flow in Networking – Simplified. Ever wondered what actually happens behind the scenes when you access a website or application? Let’s break down the packet flow in a network step by step 👇 📌 1. ARP (Address Resolution Protocol) Before communication begins, the source device must identify the destination’s MAC address within the local network. ➡️ ARP bridges the gap between IP (Layer 3) and MAC (Layer 2) addressing. 🌐 2. DNS Lookup If you're accessing a domain (e.g., google.com), the system queries a DNS server to resolve it into an IP address. ➡️ This is how human-readable names become machine-understandable addresses. 🤝 3. TCP Handshake (3-Way Handshake) A reliable connection is established using: SYN → Initiate connection SYN-ACK → Acknowledge + respond ACK → Final confirmation ➡️ Ensures both sender and receiver are ready for data exchange. 🚦 4. Routing Once the connection is established, packets are forwarded across networks via routers. ➡️ Each router makes intelligent decisions based on routing tables to reach the destination efficiently. 🔀 5. Switching Within the destination network, switches deliver packets to the exact endpoint using MAC address tables. ➡️ Ensures precise delivery inside LAN environments. 📦 Final Step: Packet Delivery The data reaches the end user, completing the communication cycle seamlessly. Understanding packet flow is fundamental for: ✔️ Network troubleshooting ✔️ Security analysis ✔️ Performance optimization ✔️ Cloud & Kubernetes networking (very relevant in modern infra) 🚀 Whether you're a Linux Admin, Network Engineer, or DevOps professional, mastering this flow is essential for debugging real-world issues. #Networking #TCPIP #DNS #ARP #DevOps #CloudComputing #Kubernetes #Linux #NetworkSecurity #TechExplained #PacketFlow

As every DevOps engineer knows, "it's always DNS" is a mantra with a grain of truth. This post gives you the tools you need to install before things start going wrong, so you are ready to diagnose DNS issues before they happen. I’ve put together a comprehensive guide on the modern DNS toolkit, covering everything from the classics to newer encrypted protocols. Move beyond nslookup and troubleshoot network issues, newer encrypted DNS protocols and security features. Don't wait for the next outage to find out your diagnostic tools aren't installed. Read more here: https://lnkd.in/eBxErhhE #DNS #DevOps #Networking #SRE #TechTools #SysAdmin #WebDevelopment

2005: Linux + networking → get a job 2010: Linux + networking + scripting → get a job 2015: Linux + networking + cloud basics → get a job 2020: Linux + Docker + Kubernetes + CI/CD → get a job 2026: Linux + Docker + Kubernetes + CI/CD + - AWS - Azure - GCP - Terraform - Python - IAM - Secrets management - SOC 2 basics - Zero Trust - SAST/DAST - SIEM basics - Incident response - Supply chain security - Container scanning - Runtime security - Policy-as-code - Threat modeling - AI security risks - LLM app security - Communication skills - 3 years of experience → get an entry-level DevSecOps job Not long ago… “Entry-level” meant you were allowed to be new. Now it often means: “You should know cloud, security, infra, automation, and production incidents before your first real security role.” That is why so many people feel overwhelmed. The bar did not just rise. It split into 5 different bars: 1. Infrastructure knowledge You need to understand Linux, networking, containers, Kubernetes, and cloud. 2. Security judgment You need to know what actually creates risk, not just what a scanner reports. 3. Automation ability You need to write scripts, build pipelines, scan images, and enforce guardrails. 4. Cloud identity depth IAM, roles, policies, service accounts, workload identity, and secret rotation are now core skills. 5. Communication You need to explain risk to engineers, managers, and sometimes leadership without hiding behind jargon. So if you are trying to break into DevSecOps and feel behind, you are not stupid. The job market started asking beginners to look like mid-level engineers. The only way through is focus. Pick one cloud. Learn Linux properly. Build 2-3 security projects. Understand IAM deeply. Learn CI/CD security. Practice explaining tradeoffs. You do not need to learn everything at once. But you do need to stop learning randomly. -- 📢 Follow saed if you enjoyed this post 🔖 Be sure to subscribe to the newsletter: https://lnkd.in/eD7hgbnk 📹 Reach me on https://lnkd.in/eZ9mU5Ka for open DM's

🚀 Building My Home DevOps Lab – Real Challenges & Practical Workarounds Over the past few days, I set up a home lab using VMware ESXi / Proxmox VE to practice DevOps tools like Terraform, Ansible, and monitoring stacks. While the setup sounds straightforward, I ran into some very real infrastructure challenges—and solving them taught me more than any tutorial. 🔴 Challenge 1: WiFi NIC Limitation Most hypervisors (ESXi/Proxmox) do NOT support WiFi adapters properly for VM networking. 👉 Result: VMs had no internet Network bridges failed ✅ Solution: Used my MacBook as a NAT gateway: Enabled macOS Internet Sharing (WiFi → LAN) Connected server via Ethernet Provided stable internet to all VMs This mimics a real-world NAT/bastion-style setup. 🔴 Challenge 2: No Direct Internet on ESXi Host Since my ESXi server had no native internet: 👉 Problems: ISO uploads were manual Package installation inside VMs was difficult ✅ Solution: Routed traffic via Mac NAT Ensured DHCP-based connectivity inside VMs 🔴 Challenge 3: RDP Connectivity Issues While accessing Windows VMs using Microsoft Remote Desktop: 👉 Issues: Multiple NIC confusion (NAT + internal LAN) Wrong interface selection Unstable connectivity ✅ Solution: Designed dual-NIC architecture: NIC1 → Internet (NAT via Mac) NIC2 → Internal LAN (RDP/SSH access) Controlled routing & interface usage 🧠 Key Learnings ✔ Not all hardware works with hypervisors (WiFi ≠ server-grade networking) ✔ NAT and network routing fundamentals are critical ✔ Real DevOps starts with solving infra-level problems ✔ Constraints force you to think like an architect ⚙️ What’s Next Creating reusable VM templates Automating provisioning using Terraform Integrating Ansible & monitoring stack #DevOps #HomeLab #VMware #Proxmox #Terraform #Networking #LearningByDoing #CloudComputing

Why Linux and Networking Are the Real Foundations of DevOps In many real-world production environments, issues are not always related to code — they are often related to servers, permissions, networking, ports, processes, or deployments failing. Companies need engineers who understand not just programming, but how systems run in production. To prepare for industry roles in DevOps / Cloud / Platform Engineering, I focused on building strong foundational knowledge in Linux and Networking so I can understand, troubleshoot, and support real production systems. I worked on learning Linux system operations (process management, users & permissions, package management, shell scripting, cron jobs, SSH) and networking fundamentals (IP addresses, DNS, HTTP/HTTPS, ports, TCP vs UDP, load balancers, reverse proxies, firewalls). This helped me understand how applications are deployed, exposed, secured, and maintained in real environments. This foundation allows me to approach problems from a systems perspective — not just writing code, but understanding deployments, debugging server issues, analyzing logs, fixing permission problems, troubleshooting network connectivity, and automating operational tasks. I can contribute to building reliable, automated, and production-ready systems rather than just individual applications. What I can bring to the table: I focus on understanding systems end-to-end — from application to server to network to deployment and I’m building skills to automate processes, improve reliability, and support scalable production environments. #DevOps #Linux #Networking #CloudComputing #PlatformEngineering #Automation #CI_CD #Docker #Kubernetes #AWS #SystemDesign #OpenToWork

🚨 Kubernetes Troubleshooting Scenario: Pods Running but App Not Accessible Externally 🚨 One of the most common (and tricky) issues in Kubernetes 👇 👉 Pods are Running & Ready 👉 Service is created 👉 Ingress is configured 👉 But still… ❌ Application not accessible from browser Here’s how I approach troubleshooting this step-by-step: 🔍 1. Check Ingress Configuration Validate host, path, and backend service mapping Ensure Ingress controller is running 🌐 2. Verify External Access Check if external IP is assigned Validate DNS mapping (A/CNAME record) 🔗 3. Inspect Service Confirm correct selector labels Ensure endpoints are properly mapped to pods 🛡️ 4. Network & Security Checks Network Policies NSGs / Firewalls Port exposure 🧪 5. Internal Testing Use kubectl port-forward Test service from inside cluster 📌 Key Insight: Even if pods are healthy, issues often lie in Ingress, Service mapping, or networking layers — not the application itself. 💡 Golden Rule: Always troubleshoot outside → inside (User → DNS → Ingress → Service → Pod) This kind of structured debugging approach has helped me quickly isolate issues and improve deployment reliability in Kubernetes environments. #Kubernetes #DevOps #CloudComputing #AKS #Troubleshooting #SRE #Azure #Containers

🐧 𝗟𝗶𝗻𝘂𝘅 𝗙𝗶𝗹𝗲 𝗦𝘆𝘀𝘁𝗲𝗺 — 𝗧𝗵𝗲 𝗕𝗮𝗰𝗸𝗯𝗼𝗻𝗲 𝗼𝗳 𝗘𝘃𝗲𝗿𝘆 𝗟𝗶𝗻𝘂𝘅 𝗦𝘆𝘀𝘁𝗲𝗺 Everything in Linux starts from a single root: / Understanding what lives inside each directory is a game-changer for developers, sysadmins, and cybersecurity professionals. Here’s a quick breakdown 👇 📁 Core Directories: • /bin — Essential command binaries • /sbin — System-level binaries • /etc — Configuration files • /dev — Device files • /proc & /sys — System & kernel information 🏠 User & Application Space: • /home — User directories • /root — Root user home • /opt — Optional/add-on software • /usr — User programs & libraries 💾 Storage & Runtime: • /var — Logs & frequently changing data • /tmp — Temporary files • /run — Runtime process data 📀 External & Mounts: • /media — Removable media (USB, CD-ROM) • /mnt — Temporary mounts 💡 Why this matters: • Navigate Linux systems with confidence • Troubleshoot issues faster • Strengthen system security • Essential for DevOps, cloud, and cybersecurity roles 👉 If you use Linux daily — which directory do you visit the most? 🔔 Follow Cyber Threat Intelligence ® for more cybersecurity tips! #Linux #DevOps #SystemAdministration #CyberSecurity #Cloud #OpenSource #TechBasics