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Introduction Red5 is an open-source media server designed for live video streaming, audio streaming, recording, and real-time communication. It supports protocols such as RTMP, WebSocket, and WebRTC, making it suitable for live streaming platforms, video conferencing, online education, and media broadcasting applications. This guide explains how to install Red5 Media… Continue Reading Red5 Installation on Centos

Introduction DNS cache stores recently resolved domain names on your computer to improve browsing speed. However, after changing DNS records, updating nameservers, or pointing a domain to a new server, your system may continue using the old cached information. Flushing the DNS cache forces your computer to retrieve the latest… Continue Reading How to Flush the DNS Cache on Windows, Linux, and macOS

Introduction The FAIL: ftp per_source_limit error occurs when the FTP service reaches the maximum number of connections allowed from a single IP address. This can prevent users from connecting to the FTP server. The issue can be resolved by updating the FTP service configuration. Prerequisites Implementation Step 1 Check the… Continue Reading FAIL: ftp per_source_limit

Introduction Dr.Web Antivirus in Plesk periodically sends email notifications related to virus database updates, scan results, and service status. In some environments, these notifications may be excessive and unnecessary. This article explains how to disable Dr.Web email notifications for different Plesk versions. Prerequisites Before proceeding, ensure that you have: Implementation… Continue Reading Disable Dr.Web Email Notifications in Plesk

Introduction By default, switching to the root user using su – requires the root password. In environments where trusted administrators require frequent root access, Linux allows you to configure passwordless root access either through the wheel group or by using sudo. Prerequisites Before you begin, ensure you have: Implementation Method… Continue Reading How to Allow a Wheel User to Switch to Root Without a Password in Linux

Introduction When attempting to access an OpenVZ virtual private server (VPS) using the vzctl enter command, you may encounter the following error: In this situation, you may also be unable to establish an SSH connection to the VPS from an external system. This issue typically occurs because the pseudo-terminal (PTY)… Continue Reading Resolving “Unable to open pty: No such file or directory” in OpenVZ VPS

Introduction Postfix is a widely used mail transfer agent (MTA) that handles email delivery and routing on Linux servers. On busy mail servers, improper configuration can lead to increased system load, excessive disk I/O, and queue processing delays. This guide outlines several tuning recommendations that can help improve Postfix performance… Continue Reading Postfix Tuning and steps to tune the postfix in server

Introduction FTP (File Transfer Protocol) is a widely used method for transferring files between a local computer and a web hosting server. FileZilla is a free and popular FTP client that allows users to securely upload, download, and manage website files. By connecting FileZilla to your hosting account using the… Continue Reading How to upload file in your account via FTP filezilla in cPanel

Introduction Dovecot is a mail delivery agent that provides IMAP and POP3 services for email clients. Verifying that Dovecot is running correctly is an important step when troubleshooting email access issues. This guide explains how to confirm that Dovecot is listening on the required ports, accepting user authentication, allowing remote… Continue Reading Testing Dovecot in Postfix or Verify Dovecot in Postfix

Introduction Servers that handle a large number of simultaneous network connections require proper system tuning to ensure optimal performance and stability. By adjusting kernel parameters and system resource limits, Linux can efficiently manage a higher number of open files and network connections. This guide explains the key settings that should… Continue Reading Linux server settings for high-load systems