Hardening Your Server: 12 Critical Steps Every Admin Should Take
12 practical steps to harden servers — disable unused services, enforce updates, secure SSH, configure firewalls, enable MFA, and perform vulnerability scans.
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Insights and guides on email, security, and modern tools.
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CI/CD Pipelines: Automating Code Deployment the Smart Way
Introduction to CI/CD pipelines: source control, automated testing, build automation, and deployment tools like GitHub Actions, GitLab CI, and Jenkins.
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Cloud Infrastructure 101: Choosing Between AWS, Azure, and Google Cloud
Comparison of major cloud providers—AWS, Azure, and Google Cloud—with guidance on which provider suits different workloads and organizational needs.
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Web Application Security (OWASP Top 10)
An overview of the OWASP Top 10 web application security risks, including broken access control, injection, cryptographic failures, and SSRF.
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RBAC Explained — Role-Based Access Control in Practice
Understand RBAC as a core security control, how it fits into modern IAM and Zero Trust architectures, and where it works best.
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Identity and Access Management (IAM)
Overview of Identity and Access Management (IAM): identification, authentication, authorization, and auditing — and why IAM is essential for modern cybersecurity.
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TCP/IP Model and Layer 3 Networking (Routing)
A practical explanation of the TCP/IP model with emphasis on Layer 3 (routing), IP addressing, and routing protocols such as OSPF and BGP.
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Linux Server Administration (Shell & Automation)
Essential Linux server administration guide: user & permission management, package updates, monitoring, systemd, and shell automation examples.
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Core Cloud Services (IaaS, PaaS, SaaS)
Explainer of cloud service models — IaaS, PaaS, SaaS — with examples and guidance on choosing the right model for your project.
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Firewalls and Network Segmentation
Learn how to design firewall policies and network segmentation to isolate systems, reduce attack surface, and improve compliance.
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Web Server Configuration (nginx & apache)
Practical configuration tips for nginx and Apache: SSL/TLS, caching, headers, virtual hosts, and performance tuning.
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Cloud Security Best Practices
Essential cloud security controls: IAM hygiene, network controls, encryption, monitoring, and incident response for cloud-native environments.
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DNS Deep Dive: How Domain Resolution Really Works
A developer-friendly deep dive into DNS: TLDs, authoritative servers, recursive resolvers, caching, and common record types (A, AAAA, CNAME, MX, TXT).
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How the Internet Works — From Packets and Protocols to Global Infrastructure
Learn how the internet works behind the scenes, from data packets and protocols to routing, DNS, and worldwide infrastructure.
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Mastering Secure Coding Practices: Preventing Vulnerabilities From Day One
Learn essential secure coding practices to prevent vulnerabilities early in the development lifecycle. Covers input validation, authentication, encryption, and more.
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