This article explains how to troubleshoot SSH key permission issues. If configurations or permissions are incorrect, SSH key-based authentication may fail. Use this knowledge base article to identify and resolve…
Tag: SSH
How to Use netstat and ss to Check Linux’s Listening Ports
September 1, 2025 / Security and BackupMonitoring active and listening ports on a Linux system is an important task for admins to ensure applications are running correctly and to detect unauthorised services. Two common tools used…
How to Enable StrictHostKeyChecking in SSH
August 20, 2025 / Security and BackupThis guide explains how to enable StrictHostKeyChecking in SSH to ensure connections are only made to verified servers. When connecting to a new server, the StrictHostKeyChecking setting determines whether an…
How to Enable Passwordless SSH Login in Linux
August 15, 2025 / Security and BackupThis guide shows how to enable Passwordless SSH login in Linux. Passwordless SSH enables you to connect to a remote Linux server without entering a password each time, using SSH…
How to Set SSH Login Email Alerts on a Linux Server
June 30, 2025 / Servers, Hosting & EmailThis article explains how to set SSH login email alerts on a Linux server. Receiving email alerts is a simple and effective way to monitor unauthorised or suspicious access on…
How to set up kdump to store crash dumps on a remote server via SSH
May 12, 2025 / Security and Backup Web HostingThis guide explains how to set up kdump to store crash dumps on a remote server through SSH. Configuring kdump to save vmcore on a remote server via SSH guarantees…
How to import a database over SSH
November 5, 2024 / Security and BackupImporting a database over SSH is faster and more reliable for large files. It bypasses size limits and provides secure, direct control over the process, making it ideal for handling…
How to Change the Default SSH Port on CentOS
September 6, 2024 / Security and BackupSecure Shell (SSH) is the primary method for remotely accessing Linux servers. By default, SSH listens on port 22, which is widely targeted by automated brute-force attacks. Changing the default…
How to check your PHP version via SSH
July 3, 2024 / Security and BackupThis article explains how to check your PHP version via SSH. It is essential for ensuring compatibility with your applications and for security purposes. Follow the systematic guide: Open Your…
How to Troubleshoot and Fix “UNKNOWN” OS in WHM
February 5, 2024 / Security and BackupIf you see “UNKNOWN” displayed at the top of WHM near the cPanel version after logging in, it usually means the RPM database is corrupted. This prevents WHM from detecting…