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Manticore Search: The Lifesaver Alternative to Elasticsearch When Server RAM Runs Out

By admin September 12, 2026

Manticore Search is the perfect Elasticsearch alternative for low-spec servers. This guide covers installation, optimization, and real-world big data tips on Linux.

Centos

Mastering Firewalld IP Sets on CentOS Stream 9: Block Thousands of IPs Instantly

By admin September 9, 2026

Block thousands of attacking IPs with a single command. A detailed guide on using Firewalld IP Sets on CentOS Stream 9 to optimize security and performance.

Virtualization

Configuring Serial Console for KVM and Proxmox: A ‘Lifeline’ When SSH Suddenly Drops

By admin September 7, 2026

Losing SSH access is a Sysadmin's nightmare. This guide shows you how to configure Serial Console for KVM and Proxmox to quickly access VMs for recovery and easily copy-paste commands.

Network

Configuring DNS Split-Horizon with BIND9: The IP “Splitting” Trick for LAN and Internet

By admin September 2, 2026

Learn how to configure DNS Split-Horizon with BIND9 to distribute internal IPs for LAN and Public IPs for the Internet. Optimize speed and reduce Firewall load.

Ubuntu

Still Vulnerable After Updating Ubuntu? Use needrestart to Fix It Properly

By admin August 30, 2026

Is an APT update enough? Learn how to use needrestart to manage service restarts, keeping your Ubuntu server secure without unnecessary reboots.

Security

Installing Endlessh: How to Trap Attack Bots in an Infinite SSH Loop on Linux

By admin August 28, 2026

Learn how to install Endlessh to create an SSH Tarpit, a technique to trap attack bots in an infinite loop, protecting Linux servers and wasting attacker resources.

Virtualization

Migrating a Linux Server to KVM: Using virt-p2v Instead of VMware Converter

By admin August 19, 2026

A detailed guide on using virt-p2v to migrate physical Linux servers to KVM. A stable, free, and production-ready P2V solution that's a perfect replacement for VMware Converter.

Network

Enabling HTTP/3 (QUIC) for Nginx: Speeding Up Websites in Poor Network Conditions

By admin August 17, 2026

Guide to upgrading Nginx to HTTP/3 (QUIC) to optimize website speed. This article shares how to fix HoL blocking, configure 0-RTT, and handle real-world firewall issues.

Fedora

Speed Up Fedora Updates: Building a Local DNF Mirror to Save Bandwidth and Time

By admin August 10, 2026

A detailed guide on building a Local DNF Mirror for Fedora to speed up package updates and save international bandwidth. The perfect solution for multi-server Lab systems.

Monitoring

Beszel Installation Guide: Monitor Dozens of Servers with Just 15MB of RAM

By admin August 9, 2026

Install Beszel - a lightweight multi-server monitoring solution with Docker Stats support. A perfect replacement for Netdata and Zabbix with minimal RAM usage.