Raihan Mohammad

Stop Guessing, Start Configuring: Master Linux Server Infrastructure. Deep expertise in Linux configuration is the bedrock of modern, scalable IT infrastructure. I highly recommend mastering a resource that covers not just commands, but the end-to-end setup of critical services. This level of knowledge ensures you can confidently manage: - Security & Access: Advanced user/permission (chmod, chown) management. - Networking: Deploying and securing Apache2, Samba, DNS, and DHCP. - Backend: Installation and administration of MySQL and Postfix mail servers. #Linux #SystemAdministration #ITSkills #ServerConfiguration #Infrastructure

8 Cyber Attacks Every Professional Must Recognize In our digital-first world, basic security awareness is mandatory for everyone. Knowing how attackers operate is half the battle. This infographic brilliantly breaks down the mechanics behind 8 of the most common cyber attacks. The 8 Attacks Explained: --------------------------- 1. Phishing: Tricking users for credentials. 2. Ransomware: Encrypting data for ransom. 3. DoS: Crashing services with excessive load. 4. MitM: Intercepting communications secretly. 5. SQL Injection: Stealing data from databases. 6. XSS: Injecting malicious code into websites. 7. Zero-Day: Exploiting unpatched vulnerabilities. 8. DNS Spoofing: Redirecting web requests to malicious sites. #CyberSecurity #ITSecurity #DataProtection #DigitalSafety

IT Administration: Perception vs. Reality To most, it looks like "just hitting restart." To us, it’s a 24/7 mission. The reality of IT Admin is often invisible: - Security & Backups: Protecting data before a crisis hits. - System Monitoring: Solving problems before users even notice them. - The Paradox: When everything works, people think we do nothing. When it breaks, we're the first line of defense. Shoutout to the "invisible heroes" keeping the systems running while the world sleeps. #ITAdminLife #TechSupport #SysAdmin #BehindTheScenes #ITReality

𝐔𝐧𝐝𝐞𝐫𝐬𝐭𝐚𝐧𝐝𝐢𝐧𝐠 𝐍𝐞𝐭𝐰𝐨𝐫𝐤 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐋𝐚𝐲𝐞𝐫𝐬 This visual clearly illustrates the different layers of network security and the common threats associated with each. From the physical infrastructure to the applications we use, security is a multi-layered responsibility. Key Layers & Associated Threats: - Application Layer: Guarding against attacks like SQL Injection and DDoS. - Presentation & Session Layers: Ensuring secure connections and data handling (e.g., preventing SSL Stripping). - Transport Layer: Protecting against connection-level floods (UDP/SYN flood). - Network Layer: Combating threats like IP spoofing and route table manipulation. - Data Link Layer: Securing intra-network communication against MAC address spoofing. - Physical Layer: Protecting the infrastructure from physical tampering and eavesdropping. #NetworkSecurity #Cybersecurity #ITSecurity #DataProtection