Esperando para ver el último capítulo de #RoosterFighter @shu_sakuratani @RoosterFighter_

Network Time Protocol crash course

Linux awk command 101

Public IP vs PRIVATE IP

#auron #auronplay #cruzazul #campeon #ligamx #huiqui #cruz #azul #huiquidios

🐧 Linux Commands Every Beginner Should Know 💻 More slides here: t.me/VasileiadisAnastasis

Network Commands for Windows

HOW VPNs WORK

Linux file System Hierarchy

Linux command line redirections illustrated

Linux Filesystem Hierarchy every Infrastructure Engineer should know: / → Root directory. Everything starts here /bin → Essential user commands (ls, cp, mv) /sbin → System admin commands (fdisk, ifconfig) /etc → Configuration files (nginx.conf, sshd_config) /var → Variable data (logs, mail, spool, databases) /var/log → System and application logs /home → User home directories /root → The root user's home (different from /) /tmp → Temporary files (cleared on reboot) /usr → User programs and libraries /opt → Optional third-party software /dev → Device files (disks, terminals) /proc → Virtual filesystem for running processes /sys → Kernel and hardware info /boot → Bootloader and kernel files /mnt → Temporary mount points /media → Removable media (USB, CDs) /lib → Shared libraries for /bin and /sbin Know where things live and Linux stops feeling like a maze.

OSI LAYERS AND ATTACKS

🚀 Most DevOps work is basically this: ☁️ Cloud AWS/GCP/Azure → run infra Terraform → create infra 🐧 Automation Bash → quick tasks Python → powerful automation 📦 Containers Docker → package apps Kubernetes → manage containers ⚡ Delivery Jenkins/GitHub Actions → CI/CD ArgoCD → GitOps deployments 📊 Monitoring Prometheus → collect metrics Grafana → visualize everything Datadog → observability platform 🌿 Collaboration Git → track changes GitHub → teamwork code reviews 🔐 Security Trivy → vulnerability scanning Wiz → cloud security scanning SonarQube → code quality checks 💡 Learn these deeply and you’ll understand most real-world DevOps workflows.

AWS VPC Architecture 🏗️ Amazon VPC helps you build isolated, secure, and scalable networks inside AWS for running cloud applications reliably. → Public subnets expose internet-facing resources like Load Balancers → Private subnets securely host internal application servers → Isolated subnets protect sensitive databases from direct internet access → Internet Gateway enables communication between VPC and the internet → NAT Gateway allows private instances to access the internet securely → Route Tables control how network traffic flows inside the VPC → Security Groups act as stateful firewalls for EC2 instances → NACLs provide subnet-level traffic filtering and security → Multi-AZ deployment improves availability and fault tolerance → VPC Peering and Transit Gateway connect multiple networks securely

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I spent a lot of time googling basic linux commands in the early days. I'm giving you a list you can use 👇👇 The commands that actually show up in real production work

How traceroute works?

Accurate

BEST CYBER SECURITY TOOLS