servermaintenanceamc

  Firewalls: An Overview A firewall is a security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between a trusted internal network and untrusted external networks (like the internet) to prevent unauthorized access, malware, and cyberattacks. Firewalls come in two main types: hardware firewalls and software firewalls . 1. Hardware Firewalls 🔹 What is a Hardware Firewall? A hardware firewall is a physical device that sits between a network and the internet. It inspects and filters network traffic before it reaches individual devices. 🔹 Key Features & Benefits: ✔ Network-Wide Protection – Secures all devices in the network at once. ✔ Dedicated Security Appliance – Does not consume system resources on individual machines. ✔ Better Performance – Handles high traffic volumes efficiently. ✔ Customizable Rules – Advanced settings for traffic filtering, VPNs, and intrusion prevention. 🔹 Co...

  Introduction Briefly highlight the importance of server uptime and reliability in today’s digital landscape. Mention how hardware failures can lead to downtime, data loss, and significant costs. State the goal: Identify common causes of server hardware failures and provide troubleshooting strategies. 1. Overheating Cause: Poor ventilation, dust buildup, or failed cooling components (fans or heatsinks). Symptoms: Servers shutting down unexpectedly, high internal temperatures, or thermal alarms. Troubleshooting: Check and clean air filters, fans, and vents. Monitor temperatures using server management tools. Replace faulty cooling components. Prevention: Regular maintenance schedules to clear dust. Use climate-controlled server rooms. Implement monitoring systems for early detection. 2. Power Supply Failures Cause: Electrical surges, unstable power sources, or aging power supplies. Symptoms: Complete power loss, intermittent reboots, or burnt smells near the PSU. Troubleshooting: T...