Netopsiyon Online – Netopsiyon Online

CSS Container Queries: Responsive Components by Their Own Size

PHP cURL Error 28: Find Where the Request Times Out

Verify a Downloaded File with SHA-256 on Windows and Linux

A Website Opens on Other Devices but Not One Computer

Changed PHP in cPanel but the Old Version Still Runs?

WHM Apache Status Fails While Apache Is Running: What to Check

Linux Server Performance: Measure Before Tuning

Nginx and Apache Security: Review the Whole Request Path

GitLab Updated but Still Vulnerable? The Alpine Incident and Ruby Checks

Is Logrotate Working? Check Scheduling, Rotation and the Active Log

cPanel and WHM Review: What the Control Panel Covers Image

Reviews cPanel and WHM Review: What the Control Panel Covers

cPanel and WHM are often described together, but they serve different administrative levels. cPanel gives an individual hosting account tools for file...

Reading a Slow MySQL Query Plan with EXPLAIN ANALYZE Image

Databases Reading a Slow MySQL Query Plan with EXPLAIN ANALYZE

A query can be slow because it reads too many rows, repeats an operation many times or waits on work outside the part you measured. EXPLAIN ANALYZE he...

Why PHP filter_input() Returns NULL Image

PHP Why PHP filter_input() Returns NULL

When filter_input() returns NULL, it is tempting to treat the value as an empty string or a failed validation. Those are different states. A missing i...

Choosing a Linux Distribution: Match the System to the Workload Image

Linux Choosing a Linux Distribution: Match the System to the Workload

There is no single Linux distribution that is best for every server and desktop. The useful comparison starts with the job: hosting a long-lived servi...

Choosing Secure Encryption Algorithms: A Practical Guide Image

Cyber Security Choosing Secure Encryption Algorithms: A Practical Guide

“Encrypt the data” sounds like one decision, but the right method depends on what you need to protect and where the keys live. Encrypting a database b...

Ransomware: Reduce the Damage and Prepare for Recovery Image

Cyber Security Ransomware: Reduce the Damage and Prepare for Recovery

Ransomware can interrupt a business even when some files are recoverable. Attackers may also steal information, compromise administrator accounts or d...

Browser Security: Settings That Matter and Myths to Avoid Image

Cyber Security Browser Security: Settings That Matter and Myths to Avoid

Your browser handles email, banking, work sessions and downloaded files in the same application. Improving its security is less about installing a col...

Smart Device Security: A Practical Home IoT Checklist Image

Cyber Security Smart Device Security: A Practical Home IoT Checklist

A camera, smart plug and television may share your Wi-Fi while receiving updates from completely different companies. Protecting them starts with know...

Stronger Account Authentication: Passwords, MFA and Passkeys Image

Cyber Security Stronger Account Authentication: Passwords, MFA and Passkeys

A long password helps against guessing, but it does not stop someone from persuading you to type it into a convincing fake login page. Account protect...

WordPress cURL Error 60: Fix Certificate Trust, Not Verification Image

PHP WordPress cURL Error 60: Fix Certificate Trust, Not Verification

cURL error 60 means certificate verification failed during a connection. In WordPress it may appear while contacting an update service, payment provid...

Postman for API Testing: Your First Request and Useful Tests Image

Reviews Postman for API Testing: Your First Request and Useful Tests

Postman is an API client and testing workspace. Its practical value is being able to save a request, repeat it with a different environment and check ...

XAMPP for Local PHP Development: Setup and Practical Limits Image

Reviews XAMPP for Local PHP Development: Setup and Practical Limits

XAMPP puts a web server and PHP development tools in one installation. It is useful when you want to run a small PHP project locally without assemblin...